/**
 * Created by jacksoft on 17/1/4.
 */
/*!
 * Vue.js v2.1.8
 * (c) 2014-2016 Evan You
 * Released under the MIT License.
 */
(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
		typeof define === 'function' && define.amd ? define(factory) :
			(global.Vue = factory());
}(this, (function () { 'use strict';

	/*  */

	/**
	 * Convert a value to a string that is actually rendered.
	 */
	function _toString (val) {
		return val == null
			? ''
			: typeof val === 'object'
			? JSON.stringify(val, null, 2)
			: String(val)
	}

	/**
	 * Convert a input value to a number for persistence.
	 * If the conversion fails, return original string.
	 */
	function toNumber (val) {
		var n = parseFloat(val, 10);
		return (n || n === 0) ? n : val
	}

	/**
	 * Make a map and return a function for checking if a key
	 * is in that map.
	 */
	function makeMap (
		str,
		expectsLowerCase
	) {
		var map = Object.create(null);
		var list = str.split(',');
		for (var i = 0; i < list.length; i++) {
			map[list[i]] = true;
		}
		return expectsLowerCase
			? function (val) { return map[val.toLowerCase()]; }
			: function (val) { return map[val]; }
	}

	/**
	 * Check if a tag is a built-in tag.
	 */
	var isBuiltInTag = makeMap('slot,component', true);

	/**
	 * Remove an item from an array
	 */
	function remove$1 (arr, item) {
		if (arr.length) {
			var index = arr.indexOf(item);
			if (index > -1) {
				return arr.splice(index, 1)
			}
		}
	}

	/**
	 * Check whether the object has the property.
	 */
	var hasOwnProperty = Object.prototype.hasOwnProperty;
	function hasOwn (obj, key) {
		return hasOwnProperty.call(obj, key)
	}

	/**
	 * Check if value is primitive
	 */
	function isPrimitive (value) {
		return typeof value === 'string' || typeof value === 'number'
	}

	/**
	 * Create a cached version of a pure function.
	 */
	function cached (fn) {
		var cache = Object.create(null);
		return (function cachedFn (str) {
			var hit = cache[str];
			return hit || (cache[str] = fn(str))
		})
	}

	/**
	 * Camelize a hyphen-delmited string.
	 */
	var camelizeRE = /-(\w)/g;
	var camelize = cached(function (str) {
		return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; })
	});

	/**
	 * Capitalize a string.
	 */
	var capitalize = cached(function (str) {
		return str.charAt(0).toUpperCase() + str.slice(1)
	});

	/**
	 * Hyphenate a camelCase string.
	 */
	var hyphenateRE = /([^-])([A-Z])/g;
	var hyphenate = cached(function (str) {
		return str
			.replace(hyphenateRE, '$1-$2')
			.replace(hyphenateRE, '$1-$2')
			.toLowerCase()
	});

	/**
	 * Simple bind, faster than native
	 */
	function bind$1 (fn, ctx) {
		function boundFn (a) {
			var l = arguments.length;
			return l
				? l > 1
				? fn.apply(ctx, arguments)
				: fn.call(ctx, a)
				: fn.call(ctx)
		}
		// record original fn length
		boundFn._length = fn.length;
		return boundFn
	}

	/**
	 * Convert an Array-like object to a real Array.
	 */
	function toArray (list, start) {
		start = start || 0;
		var i = list.length - start;
		var ret = new Array(i);
		while (i--) {
			ret[i] = list[i + start];
		}
		return ret
	}

	/**
	 * Mix properties into target object.
	 */
	function extend (to, _from) {
		for (var key in _from) {
			to[key] = _from[key];
		}
		return to
	}

	/**
	 * Quick object check - this is primarily used to tell
	 * Objects from primitive values when we know the value
	 * is a JSON-compliant type.
	 */
	function isObject (obj) {
		return obj !== null && typeof obj === 'object'
	}

	/**
	 * Strict object type check. Only returns true
	 * for plain JavaScript objects.
	 */
	var toString = Object.prototype.toString;
	var OBJECT_STRING = '[object Object]';
	function isPlainObject (obj) {
		return toString.call(obj) === OBJECT_STRING
	}

	/**
	 * Merge an Array of Objects into a single Object.
	 */
	function toObject (arr) {
		var res = {};
		for (var i = 0; i < arr.length; i++) {
			if (arr[i]) {
				extend(res, arr[i]);
			}
		}
		return res
	}

	/**
	 * Perform no operation.
	 */
	function noop () {}

	/**
	 * Always return false.
	 */
	var no = function () { return false; };

	/**
	 * Return same value
	 */
	var identity = function (_) { return _; };

	/**
	 * Generate a static keys string from compiler modules.
	 */
	function genStaticKeys (modules) {
		return modules.reduce(function (keys, m) {
			return keys.concat(m.staticKeys || [])
		}, []).join(',')
	}

	/**
	 * Check if two values are loosely equal - that is,
	 * if they are plain objects, do they have the same shape?
	 */
	function looseEqual (a, b) {
		var isObjectA = isObject(a);
		var isObjectB = isObject(b);
		if (isObjectA && isObjectB) {
			return JSON.stringify(a) === JSON.stringify(b)
		} else if (!isObjectA && !isObjectB) {
			return String(a) === String(b)
		} else {
			return false
		}
	}

	function looseIndexOf (arr, val) {
		for (var i = 0; i < arr.length; i++) {
			if (looseEqual(arr[i], val)) { return i }
		}
		return -1
	}

	/*  */

	var config = {
		/**
		 * Option merge strategies (used in core/util/options)
		 */
		optionMergeStrategies: Object.create(null),

		/**
		 * Whether to suppress warnings.
		 */
		silent: false,

		/**
		 * Whether to enable devtools
		 */
		devtools: "development" !== 'production',

		/**
		 * Error handler for watcher errors
		 */
		errorHandler: null,

		/**
		 * Ignore certain custom elements
		 */
		ignoredElements: [],

		/**
		 * Custom user key aliases for v-on
		 */
		keyCodes: Object.create(null),

		/**
		 * Check if a tag is reserved so that it cannot be registered as a
		 * component. This is platform-dependent and may be overwritten.
		 */
		isReservedTag: no,

		/**
		 * Check if a tag is an unknown element.
		 * Platform-dependent.
		 */
		isUnknownElement: no,

		/**
		 * Get the namespace of an element
		 */
		getTagNamespace: noop,

		/**
		 * Parse the real tag name for the specific platform.
		 */
		parsePlatformTagName: identity,

		/**
		 * Check if an attribute must be bound using property, e.g. value
		 * Platform-dependent.
		 */
		mustUseProp: no,

		/**
		 * List of asset types that a component can own.
		 */
		_assetTypes: [
			'component',
			'directive',
			'filter'
		],

		/**
		 * List of lifecycle hooks.
		 */
		_lifecycleHooks: [
			'beforeCreate',
			'created',
			'beforeMount',
			'mounted',
			'beforeUpdate',
			'updated',
			'beforeDestroy',
			'destroyed',
			'activated',
			'deactivated'
		],

		/**
		 * Max circular updates allowed in a scheduler flush cycle.
		 */
		_maxUpdateCount: 100
	};

	/*  */

	/**
	 * Check if a string starts with $ or _
	 */
	function isReserved (str) {
		var c = (str + '').charCodeAt(0);
		return c === 0x24 || c === 0x5F
	}

	/**
	 * Define a property.
	 */
	function def (obj, key, val, enumerable) {
		Object.defineProperty(obj, key, {
			value: val,
			enumerable: !!enumerable,
			writable: true,
			configurable: true
		});
	}

	/**
	 * Parse simple path.
	 */
	var bailRE = /[^\w.$]/;
	function parsePath (path) {
		if (bailRE.test(path)) {
			return
		} else {
			var segments = path.split('.');
			return function (obj) {
				for (var i = 0; i < segments.length; i++) {
					if (!obj) { return }
					obj = obj[segments[i]];
				}
				return obj
			}
		}
	}

	/*  */
	/* globals MutationObserver */

// can we use __proto__?
	var hasProto = '__proto__' in {};

// Browser environment sniffing
	var inBrowser = typeof window !== 'undefined';
	var UA = inBrowser && window.navigator.userAgent.toLowerCase();
	var isIE = UA && /msie|trident/.test(UA);
	var isIE9 = UA && UA.indexOf('msie 9.0') > 0;
	var isEdge = UA && UA.indexOf('edge/') > 0;
	var isAndroid = UA && UA.indexOf('android') > 0;
	var isIOS = UA && /iphone|ipad|ipod|ios/.test(UA);

// this needs to be lazy-evaled because vue may be required before
// vue-server-renderer can set VUE_ENV
	var _isServer;
	var isServerRendering = function () {
		if (_isServer === undefined) {
			/* istanbul ignore if */
			if (!inBrowser && typeof global !== 'undefined') {
				// detect presence of vue-server-renderer and avoid
				// Webpack shimming the process
				_isServer = global['process'].env.VUE_ENV === 'server';
			} else {
				_isServer = false;
			}
		}
		return _isServer
	};

// detect devtools
	var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__;

	/* istanbul ignore next */
	function isNative (Ctor) {
		return /native code/.test(Ctor.toString())
	}

	/**
	 * Defer a task to execute it asynchronously.
	 */
	var nextTick = (function () {
		var callbacks = [];
		var pending = false;
		var timerFunc;

		function nextTickHandler () {
			pending = false;
			var copies = callbacks.slice(0);
			callbacks.length = 0;
			for (var i = 0; i < copies.length; i++) {
				copies[i]();
			}
		}

		// the nextTick behavior leverages the microtask queue, which can be accessed
		// via either native Promise.then or MutationObserver.
		// MutationObserver has wider support, however it is seriously bugged in
		// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It
		// completely stops working after triggering a few times... so, if native
		// Promise is available, we will use it:
		/* istanbul ignore if */
		if (typeof Promise !== 'undefined' && isNative(Promise)) {
			var p = Promise.resolve();
			var logError = function (err) { console.error(err); };
			timerFunc = function () {
				p.then(nextTickHandler).catch(logError);
				// in problematic UIWebViews, Promise.then doesn't completely break, but
				// it can get stuck in a weird state where callbacks are pushed into the
				// microtask queue but the queue isn't being flushed, until the browser
				// needs to do some other work, e.g. handle a timer. Therefore we can
				// "force" the microtask queue to be flushed by adding an empty timer.
				if (isIOS) { setTimeout(noop); }
			};
		} else if (typeof MutationObserver !== 'undefined' && (
				isNative(MutationObserver) ||
					// PhantomJS and iOS 7.x
				MutationObserver.toString() === '[object MutationObserverConstructor]'
			)) {
			// use MutationObserver where native Promise is not available,
			// e.g. PhantomJS IE11, iOS7, Android 4.4
			var counter = 1;
			var observer = new MutationObserver(nextTickHandler);
			var textNode = document.createTextNode(String(counter));
			observer.observe(textNode, {
				characterData: true
			});
			timerFunc = function () {
				counter = (counter + 1) % 2;
				textNode.data = String(counter);
			};
		} else {
			// fallback to setTimeout
			/* istanbul ignore next */
			timerFunc = function () {
				setTimeout(nextTickHandler, 0);
			};
		}

		return function queueNextTick (cb, ctx) {
			var _resolve;
			callbacks.push(function () {
				if (cb) { cb.call(ctx); }
				if (_resolve) { _resolve(ctx); }
			});
			if (!pending) {
				pending = true;
				timerFunc();
			}
			if (!cb && typeof Promise !== 'undefined') {
				return new Promise(function (resolve) {
					_resolve = resolve;
				})
			}
		}
	})();

	var _Set;
	/* istanbul ignore if */
	if (typeof Set !== 'undefined' && isNative(Set)) {
		// use native Set when available.
		_Set = Set;
	} else {
		// a non-standard Set polyfill that only works with primitive keys.
		_Set = (function () {
			function Set () {
				this.set = Object.create(null);
			}
			Set.prototype.has = function has (key) {
				return this.set[key] === true
			};
			Set.prototype.add = function add (key) {
				this.set[key] = true;
			};
			Set.prototype.clear = function clear () {
				this.set = Object.create(null);
			};

			return Set;
		}());
	}

	var warn = noop;
	var formatComponentName;

	{
		var hasConsole = typeof console !== 'undefined';

		warn = function (msg, vm) {
			if (hasConsole && (!config.silent)) {
				console.error("[Vue warn]: " + msg + " " + (
						vm ? formatLocation(formatComponentName(vm)) : ''
					));
			}
		};

		formatComponentName = function (vm) {
			if (vm.$root === vm) {
				return 'root instance'
			}
			var name = vm._isVue
				? vm.$options.name || vm.$options._componentTag
				: vm.name;
			return (
				(name ? ("component <" + name + ">") : "anonymous component") +
				(vm._isVue && vm.$options.__file ? (" at " + (vm.$options.__file)) : '')
			)
		};

		var formatLocation = function (str) {
			if (str === 'anonymous component') {
				str += " - use the \"name\" option for better debugging messages.";
			}
			return ("\n(found in " + str + ")")
		};
	}

	/*  */


	var uid$1 = 0;

	/**
	 * A dep is an observable that can have multiple
	 * directives subscribing to it.
	 */
	var Dep = function Dep () {
		this.id = uid$1++;
		this.subs = [];
	};

	Dep.prototype.addSub = function addSub (sub) {
		this.subs.push(sub);
	};

	Dep.prototype.removeSub = function removeSub (sub) {
		remove$1(this.subs, sub);
	};

	Dep.prototype.depend = function depend () {
		if (Dep.target) {
			Dep.target.addDep(this);
		}
	};

	Dep.prototype.notify = function notify () {
		// stablize the subscriber list first
		var subs = this.subs.slice();
		for (var i = 0, l = subs.length; i < l; i++) {
			subs[i].update();
		}
	};

// the current target watcher being evaluated.
// this is globally unique because there could be only one
// watcher being evaluated at any time.
	Dep.target = null;
	var targetStack = [];

	function pushTarget (_target) {
		if (Dep.target) { targetStack.push(Dep.target); }
		Dep.target = _target;
	}

	function popTarget () {
		Dep.target = targetStack.pop();
	}

	/*
	 * not type checking this file because flow doesn't play well with
	 * dynamically accessing methods on Array prototype
	 */

	var arrayProto = Array.prototype;
	var arrayMethods = Object.create(arrayProto);[
		'push',
		'pop',
		'shift',
		'unshift',
		'splice',
		'sort',
		'reverse'
	]
		.forEach(function (method) {
			// cache original method
			var original = arrayProto[method];
			def(arrayMethods, method, function mutator () {
				var arguments$1 = arguments;

				// avoid leaking arguments:
				// http://jsperf.com/closure-with-arguments
				var i = arguments.length;
				var args = new Array(i);
				while (i--) {
					args[i] = arguments$1[i];
				}
				var result = original.apply(this, args);
				var ob = this.__ob__;
				var inserted;
				switch (method) {
					case 'push':
						inserted = args;
						break
					case 'unshift':
						inserted = args;
						break
					case 'splice':
						inserted = args.slice(2);
						break
				}
				if (inserted) { ob.observeArray(inserted); }
				// notify change
				ob.dep.notify();
				return result
			});
		});

	/*  */

	var arrayKeys = Object.getOwnPropertyNames(arrayMethods);

	/**
	 * By default, when a reactive property is set, the new value is
	 * also converted to become reactive. However when passing down props,
	 * we don't want to force conversion because the value may be a nested value
	 * under a frozen data structure. Converting it would defeat the optimization.
	 */
	var observerState = {
		shouldConvert: true,
		isSettingProps: false
	};

	/**
	 * Observer class that are attached to each observed
	 * object. Once attached, the observer converts target
	 * object's property keys into getter/setters that
	 * collect dependencies and dispatches updates.
	 */
	var Observer = function Observer (value) {
		this.value = value;
		this.dep = new Dep();
		this.vmCount = 0;
		def(value, '__ob__', this);
		if (Array.isArray(value)) {
			var augment = hasProto
				? protoAugment
				: copyAugment;
			augment(value, arrayMethods, arrayKeys);
			this.observeArray(value);
		} else {
			this.walk(value);
		}
	};

	/**
	 * Walk through each property and convert them into
	 * getter/setters. This method should only be called when
	 * value type is Object.
	 */
	Observer.prototype.walk = function walk (obj) {
		var keys = Object.keys(obj);
		for (var i = 0; i < keys.length; i++) {
			defineReactive$$1(obj, keys[i], obj[keys[i]]);
		}
	};

	/**
	 * Observe a list of Array items.
	 */
	Observer.prototype.observeArray = function observeArray (items) {
		for (var i = 0, l = items.length; i < l; i++) {
			observe(items[i]);
		}
	};

// helpers

	/**
	 * Augment an target Object or Array by intercepting
	 * the prototype chain using __proto__
	 */
	function protoAugment (target, src) {
		/* eslint-disable no-proto */
		target.__proto__ = src;
		/* eslint-enable no-proto */
	}

	/**
	 * Augment an target Object or Array by defining
	 * hidden properties.
	 */
	/* istanbul ignore next */
	function copyAugment (target, src, keys) {
		for (var i = 0, l = keys.length; i < l; i++) {
			var key = keys[i];
			def(target, key, src[key]);
		}
	}

	/**
	 * Attempt to create an observer instance for a value,
	 * returns the new observer if successfully observed,
	 * or the existing observer if the value already has one.
	 */
	function observe (value, asRootData) {
		if (!isObject(value)) {
			return
		}
		var ob;
		if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
			ob = value.__ob__;
		} else if (
			observerState.shouldConvert &&
			!isServerRendering() &&
			(Array.isArray(value) || isPlainObject(value)) &&
			Object.isExtensible(value) &&
			!value._isVue
		) {
			ob = new Observer(value);
		}
		if (asRootData && ob) {
			ob.vmCount++;
		}
		return ob
	}

	/**
	 * Define a reactive property on an Object.
	 */
	function defineReactive$$1 (
		obj,
		key,
		val,
		customSetter
	) {
		var dep = new Dep();

		var property = Object.getOwnPropertyDescriptor(obj, key);
		if (property && property.configurable === false) {
			return
		}

		// cater for pre-defined getter/setters
		var getter = property && property.get;
		var setter = property && property.set;

		var childOb = observe(val);
		Object.defineProperty(obj, key, {
			enumerable: true,
			configurable: true,
			get: function reactiveGetter () {
				var value = getter ? getter.call(obj) : val;
				if (Dep.target) {
					dep.depend();
					if (childOb) {
						childOb.dep.depend();
					}
					if (Array.isArray(value)) {
						dependArray(value);
					}
				}
				return value
			},
			set: function reactiveSetter (newVal) {
				var value = getter ? getter.call(obj) : val;
				/* eslint-disable no-self-compare */
				if (newVal === value || (newVal !== newVal && value !== value)) {
					return
				}
				/* eslint-enable no-self-compare */
				if ("development" !== 'production' && customSetter) {
					customSetter();
				}
				if (setter) {
					setter.call(obj, newVal);
				} else {
					val = newVal;
				}
				childOb = observe(newVal);
				dep.notify();
			}
		});
	}

	/**
	 * Set a property on an object. Adds the new property and
	 * triggers change notification if the property doesn't
	 * already exist.
	 */
	function set$1 (obj, key, val) {
		if (Array.isArray(obj)) {
			obj.length = Math.max(obj.length, key);
			obj.splice(key, 1, val);
			return val
		}
		if (hasOwn(obj, key)) {
			obj[key] = val;
			return
		}
		var ob = obj.__ob__;
		if (obj._isVue || (ob && ob.vmCount)) {
			"development" !== 'production' && warn(
				'Avoid adding reactive properties to a Vue instance or its root $data ' +
				'at runtime - declare it upfront in the data option.'
			);
			return
		}
		if (!ob) {
			obj[key] = val;
			return
		}
		defineReactive$$1(ob.value, key, val);
		ob.dep.notify();
		return val
	}

	/**
	 * Delete a property and trigger change if necessary.
	 */
	function del (obj, key) {
		var ob = obj.__ob__;
		if (obj._isVue || (ob && ob.vmCount)) {
			"development" !== 'production' && warn(
				'Avoid deleting properties on a Vue instance or its root $data ' +
				'- just set it to null.'
			);
			return
		}
		if (!hasOwn(obj, key)) {
			return
		}
		delete obj[key];
		if (!ob) {
			return
		}
		ob.dep.notify();
	}

	/**
	 * Collect dependencies on array elements when the array is touched, since
	 * we cannot intercept array element access like property getters.
	 */
	function dependArray (value) {
		for (var e = (void 0), i = 0, l = value.length; i < l; i++) {
			e = value[i];
			e && e.__ob__ && e.__ob__.dep.depend();
			if (Array.isArray(e)) {
				dependArray(e);
			}
		}
	}

	/*  */

	/**
	 * Option overwriting strategies are functions that handle
	 * how to merge a parent option value and a child option
	 * value into the final value.
	 */
	var strats = config.optionMergeStrategies;

	/**
	 * Options with restrictions
	 */
	{
		strats.el = strats.propsData = function (parent, child, vm, key) {
			if (!vm) {
				warn(
					"option \"" + key + "\" can only be used during instance " +
					'creation with the `new` keyword.'
				);
			}
			return defaultStrat(parent, child)
		};
	}

	/**
	 * Helper that recursively merges two data objects together.
	 */
	function mergeData (to, from) {
		if (!from) { return to }
		var key, toVal, fromVal;
		var keys = Object.keys(from);
		for (var i = 0; i < keys.length; i++) {
			key = keys[i];
			toVal = to[key];
			fromVal = from[key];
			if (!hasOwn(to, key)) {
				set$1(to, key, fromVal);
			} else if (isPlainObject(toVal) && isPlainObject(fromVal)) {
				mergeData(toVal, fromVal);
			}
		}
		return to
	}

	/**
	 * Data
	 */
	strats.data = function (
		parentVal,
		childVal,
		vm
	) {
		if (!vm) {
			// in a Vue.extend merge, both should be functions
			if (!childVal) {
				return parentVal
			}
			if (typeof childVal !== 'function') {
				"development" !== 'production' && warn(
					'The "data" option should be a function ' +
					'that returns a per-instance value in component ' +
					'definitions.',
					vm
				);
				return parentVal
			}
			if (!parentVal) {
				return childVal
			}
			// when parentVal & childVal are both present,
			// we need to return a function that returns the
			// merged result of both functions... no need to
			// check if parentVal is a function here because
			// it has to be a function to pass previous merges.
			return function mergedDataFn () {
				return mergeData(
					childVal.call(this),
					parentVal.call(this)
				)
			}
		} else if (parentVal || childVal) {
			return function mergedInstanceDataFn () {
				// instance merge
				var instanceData = typeof childVal === 'function'
					? childVal.call(vm)
					: childVal;
				var defaultData = typeof parentVal === 'function'
					? parentVal.call(vm)
					: undefined;
				if (instanceData) {
					return mergeData(instanceData, defaultData)
				} else {
					return defaultData
				}
			}
		}
	};

	/**
	 * Hooks and param attributes are merged as arrays.
	 */
	function mergeHook (
		parentVal,
		childVal
	) {
		return childVal
			? parentVal
			? parentVal.concat(childVal)
			: Array.isArray(childVal)
			? childVal
			: [childVal]
			: parentVal
	}

	config._lifecycleHooks.forEach(function (hook) {
		strats[hook] = mergeHook;
	});

	/**
	 * Assets
	 *
	 * When a vm is present (instance creation), we need to do
	 * a three-way merge between constructor options, instance
	 * options and parent options.
	 */
	function mergeAssets (parentVal, childVal) {
		var res = Object.create(parentVal || null);
		return childVal
			? extend(res, childVal)
			: res
	}

	config._assetTypes.forEach(function (type) {
		strats[type + 's'] = mergeAssets;
	});

	/**
	 * Watchers.
	 *
	 * Watchers hashes should not overwrite one
	 * another, so we merge them as arrays.
	 */
	strats.watch = function (parentVal, childVal) {
		/* istanbul ignore if */
		if (!childVal) { return parentVal }
		if (!parentVal) { return childVal }
		var ret = {};
		extend(ret, parentVal);
		for (var key in childVal) {
			var parent = ret[key];
			var child = childVal[key];
			if (parent && !Array.isArray(parent)) {
				parent = [parent];
			}
			ret[key] = parent
				? parent.concat(child)
				: [child];
		}
		return ret
	};

	/**
	 * Other object hashes.
	 */
	strats.props =
		strats.methods =
			strats.computed = function (parentVal, childVal) {
				if (!childVal) { return parentVal }
				if (!parentVal) { return childVal }
				var ret = Object.create(null);
				extend(ret, parentVal);
				extend(ret, childVal);
				return ret
			};

	/**
	 * Default strategy.
	 */
	var defaultStrat = function (parentVal, childVal) {
		return childVal === undefined
			? parentVal
			: childVal
	};

	/**
	 * Validate component names
	 */
	function checkComponents (options) {
		for (var key in options.components) {
			var lower = key.toLowerCase();
			if (isBuiltInTag(lower) || config.isReservedTag(lower)) {
				warn(
					'Do not use built-in or reserved HTML elements as component ' +
					'id: ' + key
				);
			}
		}
	}

	/**
	 * Ensure all props option syntax are normalized into the
	 * Object-based format.
	 */
	function normalizeProps (options) {
		var props = options.props;
		if (!props) { return }
		var res = {};
		var i, val, name;
		if (Array.isArray(props)) {
			i = props.length;
			while (i--) {
				val = props[i];
				if (typeof val === 'string') {
					name = camelize(val);
					res[name] = { type: null };
				} else {
					warn('props must be strings when using array syntax.');
				}
			}
		} else if (isPlainObject(props)) {
			for (var key in props) {
				val = props[key];
				name = camelize(key);
				res[name] = isPlainObject(val)
					? val
					: { type: val };
			}
		}
		options.props = res;
	}

	/**
	 * Normalize raw function directives into object format.
	 */
	function normalizeDirectives (options) {
		var dirs = options.directives;
		if (dirs) {
			for (var key in dirs) {
				var def = dirs[key];
				if (typeof def === 'function') {
					dirs[key] = { bind: def, update: def };
				}
			}
		}
	}

	/**
	 * Merge two option objects into a new one.
	 * Core utility used in both instantiation and inheritance.
	 */
	function mergeOptions (
		parent,
		child,
		vm
	) {
		{
			checkComponents(child);
		}
		normalizeProps(child);
		normalizeDirectives(child);
		var extendsFrom = child.extends;
		if (extendsFrom) {
			parent = typeof extendsFrom === 'function'
				? mergeOptions(parent, extendsFrom.options, vm)
				: mergeOptions(parent, extendsFrom, vm);
		}
		if (child.mixins) {
			for (var i = 0, l = child.mixins.length; i < l; i++) {
				var mixin = child.mixins[i];
				if (mixin.prototype instanceof Vue$3) {
					mixin = mixin.options;
				}
				parent = mergeOptions(parent, mixin, vm);
			}
		}
		var options = {};
		var key;
		for (key in parent) {
			mergeField(key);
		}
		for (key in child) {
			if (!hasOwn(parent, key)) {
				mergeField(key);
			}
		}
		function mergeField (key) {
			var strat = strats[key] || defaultStrat;
			options[key] = strat(parent[key], child[key], vm, key);
		}
		return options
	}

	/**
	 * Resolve an asset.
	 * This function is used because child instances need access
	 * to assets defined in its ancestor chain.
	 */
	function resolveAsset (
		options,
		type,
		id,
		warnMissing
	) {
		/* istanbul ignore if */
		if (typeof id !== 'string') {
			return
		}
		var assets = options[type];
		// check local registration variations first
		if (hasOwn(assets, id)) { return assets[id] }
		var camelizedId = camelize(id);
		if (hasOwn(assets, camelizedId)) { return assets[camelizedId] }
		var PascalCaseId = capitalize(camelizedId);
		if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] }
		// fallback to prototype chain
		var res = assets[id] || assets[camelizedId] || assets[PascalCaseId];
		if ("development" !== 'production' && warnMissing && !res) {
			warn(
				'Failed to resolve ' + type.slice(0, -1) + ': ' + id,
				options
			);
		}
		return res
	}

	/*  */

	function validateProp (
		key,
		propOptions,
		propsData,
		vm
	) {
		var prop = propOptions[key];
		var absent = !hasOwn(propsData, key);
		var value = propsData[key];
		// handle boolean props
		if (isType(Boolean, prop.type)) {
			if (absent && !hasOwn(prop, 'default')) {
				value = false;
			} else if (!isType(String, prop.type) && (value === '' || value === hyphenate(key))) {
				value = true;
			}
		}
		// check default value
		if (value === undefined) {
			value = getPropDefaultValue(vm, prop, key);
			// since the default value is a fresh copy,
			// make sure to observe it.
			var prevShouldConvert = observerState.shouldConvert;
			observerState.shouldConvert = true;
			observe(value);
			observerState.shouldConvert = prevShouldConvert;
		}
		{
			assertProp(prop, key, value, vm, absent);
		}
		return value
	}

	/**
	 * Get the default value of a prop.
	 */
	function getPropDefaultValue (vm, prop, key) {
		// no default, return undefined
		if (!hasOwn(prop, 'default')) {
			return undefined
		}
		var def = prop.default;
		// warn against non-factory defaults for Object & Array
		if (isObject(def)) {
			"development" !== 'production' && warn(
				'Invalid default value for prop "' + key + '": ' +
				'Props with type Object/Array must use a factory function ' +
				'to return the default value.',
				vm
			);
		}
		// the raw prop value was also undefined from previous render,
		// return previous default value to avoid unnecessary watcher trigger
		if (vm && vm.$options.propsData &&
			vm.$options.propsData[key] === undefined &&
			vm[key] !== undefined) {
			return vm[key]
		}
		// call factory function for non-Function types
		return typeof def === 'function' && prop.type !== Function
			? def.call(vm)
			: def
	}

	/**
	 * Assert whether a prop is valid.
	 */
	function assertProp (
		prop,
		name,
		value,
		vm,
		absent
	) {
		if (prop.required && absent) {
			warn(
				'Missing required prop: "' + name + '"',
				vm
			);
			return
		}
		if (value == null && !prop.required) {
			return
		}
		var type = prop.type;
		var valid = !type || type === true;
		var expectedTypes = [];
		if (type) {
			if (!Array.isArray(type)) {
				type = [type];
			}
			for (var i = 0; i < type.length && !valid; i++) {
				var assertedType = assertType(value, type[i]);
				expectedTypes.push(assertedType.expectedType || '');
				valid = assertedType.valid;
			}
		}
		if (!valid) {
			warn(
				'Invalid prop: type check failed for prop "' + name + '".' +
				' Expected ' + expectedTypes.map(capitalize).join(', ') +
				', got ' + Object.prototype.toString.call(value).slice(8, -1) + '.',
				vm
			);
			return
		}
		var validator = prop.validator;
		if (validator) {
			if (!validator(value)) {
				warn(
					'Invalid prop: custom validator check failed for prop "' + name + '".',
					vm
				);
			}
		}
	}

	/**
	 * Assert the type of a value
	 */
	function assertType (value, type) {
		var valid;
		var expectedType = getType(type);
		if (expectedType === 'String') {
			valid = typeof value === (expectedType = 'string');
		} else if (expectedType === 'Number') {
			valid = typeof value === (expectedType = 'number');
		} else if (expectedType === 'Boolean') {
			valid = typeof value === (expectedType = 'boolean');
		} else if (expectedType === 'Function') {
			valid = typeof value === (expectedType = 'function');
		} else if (expectedType === 'Object') {
			valid = isPlainObject(value);
		} else if (expectedType === 'Array') {
			valid = Array.isArray(value);
		} else {
			valid = value instanceof type;
		}
		return {
			valid: valid,
			expectedType: expectedType
		}
	}

	/**
	 * Use function string name to check built-in types,
	 * because a simple equality check will fail when running
	 * across different vms / iframes.
	 */
	function getType (fn) {
		var match = fn && fn.toString().match(/^\s*function (\w+)/);
		return match && match[1]
	}

	function isType (type, fn) {
		if (!Array.isArray(fn)) {
			return getType(fn) === getType(type)
		}
		for (var i = 0, len = fn.length; i < len; i++) {
			if (getType(fn[i]) === getType(type)) {
				return true
			}
		}
		/* istanbul ignore next */
		return false
	}



	var util = Object.freeze({
		defineReactive: defineReactive$$1,
		_toString: _toString,
		toNumber: toNumber,
		makeMap: makeMap,
		isBuiltInTag: isBuiltInTag,
		remove: remove$1,
		hasOwn: hasOwn,
		isPrimitive: isPrimitive,
		cached: cached,
		camelize: camelize,
		capitalize: capitalize,
		hyphenate: hyphenate,
		bind: bind$1,
		toArray: toArray,
		extend: extend,
		isObject: isObject,
		isPlainObject: isPlainObject,
		toObject: toObject,
		noop: noop,
		no: no,
		identity: identity,
		genStaticKeys: genStaticKeys,
		looseEqual: looseEqual,
		looseIndexOf: looseIndexOf,
		isReserved: isReserved,
		def: def,
		parsePath: parsePath,
		hasProto: hasProto,
		inBrowser: inBrowser,
		UA: UA,
		isIE: isIE,
		isIE9: isIE9,
		isEdge: isEdge,
		isAndroid: isAndroid,
		isIOS: isIOS,
		isServerRendering: isServerRendering,
		devtools: devtools,
		nextTick: nextTick,
		get _Set () { return _Set; },
		mergeOptions: mergeOptions,
		resolveAsset: resolveAsset,
		get warn () { return warn; },
		get formatComponentName () { return formatComponentName; },
		validateProp: validateProp
	});

	/* not type checking this file because flow doesn't play well with Proxy */

	var initProxy;

	{
		var allowedGlobals = makeMap(
			'Infinity,undefined,NaN,isFinite,isNaN,' +
			'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' +
			'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' +
			'require' // for Webpack/Browserify
		);

		var warnNonPresent = function (target, key) {
			warn(
				"Property or method \"" + key + "\" is not defined on the instance but " +
				"referenced during render. Make sure to declare reactive data " +
				"properties in the data option.",
				target
			);
		};

		var hasProxy =
			typeof Proxy !== 'undefined' &&
			Proxy.toString().match(/native code/);

		if (hasProxy) {
			var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta');
			config.keyCodes = new Proxy(config.keyCodes, {
				set: function set (target, key, value) {
					if (isBuiltInModifier(key)) {
						warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key));
						return false
					} else {
						target[key] = value;
						return true
					}
				}
			});
		}

		var hasHandler = {
			has: function has (target, key) {
				var has = key in target;
				var isAllowed = allowedGlobals(key) || key.charAt(0) === '_';
				if (!has && !isAllowed) {
					warnNonPresent(target, key);
				}
				return has || !isAllowed
			}
		};

		var getHandler = {
			get: function get (target, key) {
				if (typeof key === 'string' && !(key in target)) {
					warnNonPresent(target, key);
				}
				return target[key]
			}
		};

		initProxy = function initProxy (vm) {
			if (hasProxy) {
				// determine which proxy handler to use
				var options = vm.$options;
				var handlers = options.render && options.render._withStripped
					? getHandler
					: hasHandler;
				vm._renderProxy = new Proxy(vm, handlers);
			} else {
				vm._renderProxy = vm;
			}
		};
	}

	/*  */


	var queue = [];
	var has$1 = {};
	var circular = {};
	var waiting = false;
	var flushing = false;
	var index = 0;

	/**
	 * Reset the scheduler's state.
	 */
	function resetSchedulerState () {
		queue.length = 0;
		has$1 = {};
		{
			circular = {};
		}
		waiting = flushing = false;
	}

	/**
	 * Flush both queues and run the watchers.
	 */
	function flushSchedulerQueue () {
		flushing = true;

		// Sort queue before flush.
		// This ensures that:
		// 1. Components are updated from parent to child. (because parent is always
		//    created before the child)
		// 2. A component's user watchers are run before its render watcher (because
		//    user watchers are created before the render watcher)
		// 3. If a component is destroyed during a parent component's watcher run,
		//    its watchers can be skipped.
		queue.sort(function (a, b) { return a.id - b.id; });

		// do not cache length because more watchers might be pushed
		// as we run existing watchers
		for (index = 0; index < queue.length; index++) {
			var watcher = queue[index];
			var id = watcher.id;
			has$1[id] = null;
			watcher.run();
			// in dev build, check and stop circular updates.
			if ("development" !== 'production' && has$1[id] != null) {
				circular[id] = (circular[id] || 0) + 1;
				if (circular[id] > config._maxUpdateCount) {
					warn(
						'You may have an infinite update loop ' + (
							watcher.user
								? ("in watcher with expression \"" + (watcher.expression) + "\"")
								: "in a component render function."
						),
						watcher.vm
					);
					break
				}
			}
		}

		// devtool hook
		/* istanbul ignore if */
		if (devtools && config.devtools) {
			devtools.emit('flush');
		}

		resetSchedulerState();
	}

	/**
	 * Push a watcher into the watcher queue.
	 * Jobs with duplicate IDs will be skipped unless it's
	 * pushed when the queue is being flushed.
	 */
	function queueWatcher (watcher) {
		var id = watcher.id;
		if (has$1[id] == null) {
			has$1[id] = true;
			if (!flushing) {
				queue.push(watcher);
			} else {
				// if already flushing, splice the watcher based on its id
				// if already past its id, it will be run next immediately.
				var i = queue.length - 1;
				while (i >= 0 && queue[i].id > watcher.id) {
					i--;
				}
				queue.splice(Math.max(i, index) + 1, 0, watcher);
			}
			// queue the flush
			if (!waiting) {
				waiting = true;
				nextTick(flushSchedulerQueue);
			}
		}
	}

	/*  */

	var uid$2 = 0;

	/**
	 * A watcher parses an expression, collects dependencies,
	 * and fires callback when the expression value changes.
	 * This is used for both the $watch() api and directives.
	 */
	var Watcher = function Watcher (
		vm,
		expOrFn,
		cb,
		options
	) {
		this.vm = vm;
		vm._watchers.push(this);
		// options
		if (options) {
			this.deep = !!options.deep;
			this.user = !!options.user;
			this.lazy = !!options.lazy;
			this.sync = !!options.sync;
		} else {
			this.deep = this.user = this.lazy = this.sync = false;
		}
		this.cb = cb;
		this.id = ++uid$2; // uid for batching
		this.active = true;
		this.dirty = this.lazy; // for lazy watchers
		this.deps = [];
		this.newDeps = [];
		this.depIds = new _Set();
		this.newDepIds = new _Set();
		this.expression = expOrFn.toString();
		// parse expression for getter
		if (typeof expOrFn === 'function') {
			this.getter = expOrFn;
		} else {
			this.getter = parsePath(expOrFn);
			if (!this.getter) {
				this.getter = function () {};
				"development" !== 'production' && warn(
					"Failed watching path: \"" + expOrFn + "\" " +
					'Watcher only accepts simple dot-delimited paths. ' +
					'For full control, use a function instead.',
					vm
				);
			}
		}
		this.value = this.lazy
			? undefined
			: this.get();
	};

	/**
	 * Evaluate the getter, and re-collect dependencies.
	 */
	Watcher.prototype.get = function get () {
		pushTarget(this);
		var value = this.getter.call(this.vm, this.vm);
		// "touch" every property so they are all tracked as
		// dependencies for deep watching
		if (this.deep) {
			traverse(value);
		}
		popTarget();
		this.cleanupDeps();
		return value
	};

	/**
	 * Add a dependency to this directive.
	 */
	Watcher.prototype.addDep = function addDep (dep) {
		var id = dep.id;
		if (!this.newDepIds.has(id)) {
			this.newDepIds.add(id);
			this.newDeps.push(dep);
			if (!this.depIds.has(id)) {
				dep.addSub(this);
			}
		}
	};

	/**
	 * Clean up for dependency collection.
	 */
	Watcher.prototype.cleanupDeps = function cleanupDeps () {
		var this$1 = this;

		var i = this.deps.length;
		while (i--) {
			var dep = this$1.deps[i];
			if (!this$1.newDepIds.has(dep.id)) {
				dep.removeSub(this$1);
			}
		}
		var tmp = this.depIds;
		this.depIds = this.newDepIds;
		this.newDepIds = tmp;
		this.newDepIds.clear();
		tmp = this.deps;
		this.deps = this.newDeps;
		this.newDeps = tmp;
		this.newDeps.length = 0;
	};

	/**
	 * Subscriber interface.
	 * Will be called when a dependency changes.
	 */
	Watcher.prototype.update = function update () {
		/* istanbul ignore else */
		if (this.lazy) {
			this.dirty = true;
		} else if (this.sync) {
			this.run();
		} else {
			queueWatcher(this);
		}
	};

	/**
	 * Scheduler job interface.
	 * Will be called by the scheduler.
	 */
	Watcher.prototype.run = function run () {
		if (this.active) {
			var value = this.get();
			if (
				value !== this.value ||
					// Deep watchers and watchers on Object/Arrays should fire even
					// when the value is the same, because the value may
					// have mutated.
				isObject(value) ||
				this.deep
			) {
				// set new value
				var oldValue = this.value;
				this.value = value;
				if (this.user) {
					try {
						this.cb.call(this.vm, value, oldValue);
					} catch (e) {
						/* istanbul ignore else */
						if (config.errorHandler) {
							config.errorHandler.call(null, e, this.vm);
						} else {
							"development" !== 'production' && warn(
								("Error in watcher \"" + (this.expression) + "\""),
								this.vm
							);
							throw e
						}
					}
				} else {
					this.cb.call(this.vm, value, oldValue);
				}
			}
		}
	};

	/**
	 * Evaluate the value of the watcher.
	 * This only gets called for lazy watchers.
	 */
	Watcher.prototype.evaluate = function evaluate () {
		this.value = this.get();
		this.dirty = false;
	};

	/**
	 * Depend on all deps collected by this watcher.
	 */
	Watcher.prototype.depend = function depend () {
		var this$1 = this;

		var i = this.deps.length;
		while (i--) {
			this$1.deps[i].depend();
		}
	};

	/**
	 * Remove self from all dependencies' subscriber list.
	 */
	Watcher.prototype.teardown = function teardown () {
		var this$1 = this;

		if (this.active) {
			// remove self from vm's watcher list
			// this is a somewhat expensive operation so we skip it
			// if the vm is being destroyed.
			if (!this.vm._isBeingDestroyed) {
				remove$1(this.vm._watchers, this);
			}
			var i = this.deps.length;
			while (i--) {
				this$1.deps[i].removeSub(this$1);
			}
			this.active = false;
		}
	};

	/**
	 * Recursively traverse an object to evoke all converted
	 * getters, so that every nested property inside the object
	 * is collected as a "deep" dependency.
	 */
	var seenObjects = new _Set();
	function traverse (val) {
		seenObjects.clear();
		_traverse(val, seenObjects);
	}

	function _traverse (val, seen) {
		var i, keys;
		var isA = Array.isArray(val);
		if ((!isA && !isObject(val)) || !Object.isExtensible(val)) {
			return
		}
		if (val.__ob__) {
			var depId = val.__ob__.dep.id;
			if (seen.has(depId)) {
				return
			}
			seen.add(depId);
		}
		if (isA) {
			i = val.length;
			while (i--) { _traverse(val[i], seen); }
		} else {
			keys = Object.keys(val);
			i = keys.length;
			while (i--) { _traverse(val[keys[i]], seen); }
		}
	}

	/*  */

	function initState (vm) {
		vm._watchers = [];
		var opts = vm.$options;
		if (opts.props) { initProps(vm, opts.props); }
		if (opts.methods) { initMethods(vm, opts.methods); }
		if (opts.data) {
			initData(vm);
		} else {
			observe(vm._data = {}, true /* asRootData */);
		}
		if (opts.computed) { initComputed(vm, opts.computed); }
		if (opts.watch) { initWatch(vm, opts.watch); }
	}

	var isReservedProp = { key: 1, ref: 1, slot: 1 };

	function initProps (vm, props) {
		var propsData = vm.$options.propsData || {};
		var keys = vm.$options._propKeys = Object.keys(props);
		var isRoot = !vm.$parent;
		// root instance props should be converted
		observerState.shouldConvert = isRoot;
		var loop = function ( i ) {
			var key = keys[i];
			/* istanbul ignore else */
			{
				if (isReservedProp[key]) {
					warn(
						("\"" + key + "\" is a reserved attribute and cannot be used as component prop."),
						vm
					);
				}
				defineReactive$$1(vm, key, validateProp(key, props, propsData, vm), function () {
					if (vm.$parent && !observerState.isSettingProps) {
						warn(
							"Avoid mutating a prop directly since the value will be " +
							"overwritten whenever the parent component re-renders. " +
							"Instead, use a data or computed property based on the prop's " +
							"value. Prop being mutated: \"" + key + "\"",
							vm
						);
					}
				});
			}
		};

		for (var i = 0; i < keys.length; i++) loop( i );
		observerState.shouldConvert = true;
	}

	function initData (vm) {
		var data = vm.$options.data;
		data = vm._data = typeof data === 'function'
			? data.call(vm)
			: data || {};
		if (!isPlainObject(data)) {
			data = {};
			"development" !== 'production' && warn(
				'data functions should return an object:\n' +
				'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function',
				vm
			);
		}
		// proxy data on instance
		var keys = Object.keys(data);
		var props = vm.$options.props;
		var i = keys.length;
		while (i--) {
			if (props && hasOwn(props, keys[i])) {
				"development" !== 'production' && warn(
					"The data property \"" + (keys[i]) + "\" is already declared as a prop. " +
					"Use prop default value instead.",
					vm
				);
			} else {
				proxy(vm, keys[i]);
			}
		}
		// observe data
		observe(data, true /* asRootData */);
	}

	var computedSharedDefinition = {
		enumerable: true,
		configurable: true,
		get: noop,
		set: noop
	};

	function initComputed (vm, computed) {
		for (var key in computed) {
			/* istanbul ignore if */
			if ("development" !== 'production' && key in vm) {
				warn(
					"existing instance property \"" + key + "\" will be " +
					"overwritten by a computed property with the same name.",
					vm
				);
			}
			var userDef = computed[key];
			if (typeof userDef === 'function') {
				computedSharedDefinition.get = makeComputedGetter(userDef, vm);
				computedSharedDefinition.set = noop;
			} else {
				computedSharedDefinition.get = userDef.get
					? userDef.cache !== false
					? makeComputedGetter(userDef.get, vm)
					: bind$1(userDef.get, vm)
					: noop;
				computedSharedDefinition.set = userDef.set
					? bind$1(userDef.set, vm)
					: noop;
			}
			Object.defineProperty(vm, key, computedSharedDefinition);
		}
	}

	function makeComputedGetter (getter, owner) {
		var watcher = new Watcher(owner, getter, noop, {
			lazy: true
		});
		return function computedGetter () {
			if (watcher.dirty) {
				watcher.evaluate();
			}
			if (Dep.target) {
				watcher.depend();
			}
			return watcher.value
		}
	}

	function initMethods (vm, methods) {
		for (var key in methods) {
			vm[key] = methods[key] == null ? noop : bind$1(methods[key], vm);
			if ("development" !== 'production' && methods[key] == null) {
				warn(
					"method \"" + key + "\" has an undefined value in the component definition. " +
					"Did you reference the function correctly?",
					vm
				);
			}
		}
	}

	function initWatch (vm, watch) {
		for (var key in watch) {
			var handler = watch[key];
			if (Array.isArray(handler)) {
				for (var i = 0; i < handler.length; i++) {
					createWatcher(vm, key, handler[i]);
				}
			} else {
				createWatcher(vm, key, handler);
			}
		}
	}

	function createWatcher (vm, key, handler) {
		var options;
		if (isPlainObject(handler)) {
			options = handler;
			handler = handler.handler;
		}
		if (typeof handler === 'string') {
			handler = vm[handler];
		}
		vm.$watch(key, handler, options);
	}

	function stateMixin (Vue) {
		// flow somehow has problems with directly declared definition object
		// when using Object.defineProperty, so we have to procedurally build up
		// the object here.
		var dataDef = {};
		dataDef.get = function () {
			return this._data
		};
		{
			dataDef.set = function (newData) {
				warn(
					'Avoid replacing instance root $data. ' +
					'Use nested data properties instead.',
					this
				);
			};
		}
		Object.defineProperty(Vue.prototype, '$data', dataDef);

		Vue.prototype.$set = set$1;
		Vue.prototype.$delete = del;

		Vue.prototype.$watch = function (
			expOrFn,
			cb,
			options
		) {
			var vm = this;
			options = options || {};
			options.user = true;
			var watcher = new Watcher(vm, expOrFn, cb, options);
			if (options.immediate) {
				cb.call(vm, watcher.value);
			}
			return function unwatchFn () {
				watcher.teardown();
			}
		};
	}

	function proxy (vm, key) {
		if (!isReserved(key)) {
			Object.defineProperty(vm, key, {
				configurable: true,
				enumerable: true,
				get: function proxyGetter () {
					return vm._data[key]
				},
				set: function proxySetter (val) {
					vm._data[key] = val;
				}
			});
		}
	}

	/*  */

	var VNode = function VNode (
		tag,
		data,
		children,
		text,
		elm,
		context,
		componentOptions
	) {
		this.tag = tag;
		this.data = data;
		this.children = children;
		this.text = text;
		this.elm = elm;
		this.ns = undefined;
		this.context = context;
		this.functionalContext = undefined;
		this.key = data && data.key;
		this.componentOptions = componentOptions;
		this.child = undefined;
		this.parent = undefined;
		this.raw = false;
		this.isStatic = false;
		this.isRootInsert = true;
		this.isComment = false;
		this.isCloned = false;
		this.isOnce = false;
	};

	var createEmptyVNode = function () {
		var node = new VNode();
		node.text = '';
		node.isComment = true;
		return node
	};

	function createTextVNode (val) {
		return new VNode(undefined, undefined, undefined, String(val))
	}

// optimized shallow clone
// used for static nodes and slot nodes because they may be reused across
// multiple renders, cloning them avoids errors when DOM manipulations rely
// on their elm reference.
	function cloneVNode (vnode) {
		var cloned = new VNode(
			vnode.tag,
			vnode.data,
			vnode.children,
			vnode.text,
			vnode.elm,
			vnode.context,
			vnode.componentOptions
		);
		cloned.ns = vnode.ns;
		cloned.isStatic = vnode.isStatic;
		cloned.key = vnode.key;
		cloned.isCloned = true;
		return cloned
	}

	function cloneVNodes (vnodes) {
		var res = new Array(vnodes.length);
		for (var i = 0; i < vnodes.length; i++) {
			res[i] = cloneVNode(vnodes[i]);
		}
		return res
	}

	/*  */

	function mergeVNodeHook (def, hookKey, hook, key) {
		key = key + hookKey;
		var injectedHash = def.__injected || (def.__injected = {});
		if (!injectedHash[key]) {
			injectedHash[key] = true;
			var oldHook = def[hookKey];
			if (oldHook) {
				def[hookKey] = function () {
					oldHook.apply(this, arguments);
					hook.apply(this, arguments);
				};
			} else {
				def[hookKey] = hook;
			}
		}
	}

	/*  */

	function updateListeners (
		on,
		oldOn,
		add,
		remove$$1,
		vm
	) {
		var name, cur, old, fn, event, capture, once;
		for (name in on) {
			cur = on[name];
			old = oldOn[name];
			if (!cur) {
				"development" !== 'production' && warn(
					"Invalid handler for event \"" + name + "\": got " + String(cur),
					vm
				);
			} else if (!old) {
				once = name.charAt(0) === '~'; // Prefixed last, checked first
				event = once ? name.slice(1) : name;
				capture = event.charAt(0) === '!';
				event = capture ? event.slice(1) : event;
				if (Array.isArray(cur)) {
					add(event, (cur.invoker = arrInvoker(cur)), once, capture);
				} else {
					if (!cur.invoker) {
						fn = cur;
						cur = on[name] = {};
						cur.fn = fn;
						cur.invoker = fnInvoker(cur);
					}
					add(event, cur.invoker, once, capture);
				}
			} else if (cur !== old) {
				if (Array.isArray(old)) {
					old.length = cur.length;
					for (var i = 0; i < old.length; i++) { old[i] = cur[i]; }
					on[name] = old;
				} else {
					old.fn = cur;
					on[name] = old;
				}
			}
		}
		for (name in oldOn) {
			if (!on[name]) {
				once = name.charAt(0) === '~'; // Prefixed last, checked first
				event = once ? name.slice(1) : name;
				capture = event.charAt(0) === '!';
				event = capture ? event.slice(1) : event;
				remove$$1(event, oldOn[name].invoker, capture);
			}
		}
	}

	function arrInvoker (arr) {
		return function (ev) {
			var arguments$1 = arguments;

			var single = arguments.length === 1;
			for (var i = 0; i < arr.length; i++) {
				single ? arr[i](ev) : arr[i].apply(null, arguments$1);
			}
		}
	}

	function fnInvoker (o) {
		return function (ev) {
			var single = arguments.length === 1;
			single ? o.fn(ev) : o.fn.apply(null, arguments);
		}
	}

	/*  */

// The template compiler attempts to minimize the need for normalization by
// statically analyzing the template at compile time.
//
// For plain HTML markup, normalization can be completely skipped because the
// generated render function is guaranteed to return Array<VNode>. There are
// two cases where extra normalization is needed:

// 1. When the children contains components - because a functional component
// may return an Array instead of a single root. In this case, just a simple
// nomralization is needed - if any child is an Array, we flatten the whole
// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep
// because functional components already normalize their own children.
	function simpleNormalizeChildren (children) {
		for (var i = 0; i < children.length; i++) {
			if (Array.isArray(children[i])) {
				return Array.prototype.concat.apply([], children)
			}
		}
		return children
	}

// 2. When the children contains constrcuts that always generated nested Arrays,
// e.g. <template>, <slot>, v-for, or when the children is provided by user
// with hand-written render functions / JSX. In such cases a full normalization
// is needed to cater to all possible types of children values.
	function normalizeChildren (children) {
		return isPrimitive(children)
			? [createTextVNode(children)]
			: Array.isArray(children)
			? normalizeArrayChildren(children)
			: undefined
	}

	function normalizeArrayChildren (children, nestedIndex) {
		var res = [];
		var i, c, last;
		for (i = 0; i < children.length; i++) {
			c = children[i];
			if (c == null || typeof c === 'boolean') { continue }
			last = res[res.length - 1];
			//  nested
			if (Array.isArray(c)) {
				res.push.apply(res, normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i)));
			} else if (isPrimitive(c)) {
				if (last && last.text) {
					last.text += String(c);
				} else if (c !== '') {
					// convert primitive to vnode
					res.push(createTextVNode(c));
				}
			} else {
				if (c.text && last && last.text) {
					res[res.length - 1] = createTextVNode(last.text + c.text);
				} else {
					// default key for nested array children (likely generated by v-for)
					if (c.tag && c.key == null && nestedIndex != null) {
						c.key = "__vlist" + nestedIndex + "_" + i + "__";
					}
					res.push(c);
				}
			}
		}
		return res
	}

	/*  */

	function getFirstComponentChild (children) {
		return children && children.filter(function (c) { return c && c.componentOptions; })[0]
	}

	/*  */

	function initEvents (vm) {
		vm._events = Object.create(null);
		vm._hasHookEvent = false;
		// init parent attached events
		var listeners = vm.$options._parentListeners;
		if (listeners) {
			updateComponentListeners(vm, listeners);
		}
	}

	var target;

	function add$1 (event, fn, once) {
		if (once) {
			target.$once(event, fn);
		} else {
			target.$on(event, fn);
		}
	}

	function remove$2 (event, fn) {
		target.$off(event, fn);
	}

	function updateComponentListeners (
		vm,
		listeners,
		oldListeners
	) {
		target = vm;
		updateListeners(listeners, oldListeners || {}, add$1, remove$2, vm);
	}

	function eventsMixin (Vue) {
		var hookRE = /^hook:/;
		Vue.prototype.$on = function (event, fn) {
			var vm = this;(vm._events[event] || (vm._events[event] = [])).push(fn);
			// optimize hook:event cost by using a boolean flag marked at registration
			// instead of a hash lookup
			if (hookRE.test(event)) {
				vm._hasHookEvent = true;
			}
			return vm
		};

		Vue.prototype.$once = function (event, fn) {
			var vm = this;
			function on () {
				vm.$off(event, on);
				fn.apply(vm, arguments);
			}
			on.fn = fn;
			vm.$on(event, on);
			return vm
		};

		Vue.prototype.$off = function (event, fn) {
			var vm = this;
			// all
			if (!arguments.length) {
				vm._events = Object.create(null);
				return vm
			}
			// specific event
			var cbs = vm._events[event];
			if (!cbs) {
				return vm
			}
			if (arguments.length === 1) {
				vm._events[event] = null;
				return vm
			}
			// specific handler
			var cb;
			var i = cbs.length;
			while (i--) {
				cb = cbs[i];
				if (cb === fn || cb.fn === fn) {
					cbs.splice(i, 1);
					break
				}
			}
			return vm
		};

		Vue.prototype.$emit = function (event) {
			var vm = this;
			var cbs = vm._events[event];
			if (cbs) {
				cbs = cbs.length > 1 ? toArray(cbs) : cbs;
				var args = toArray(arguments, 1);
				for (var i = 0, l = cbs.length; i < l; i++) {
					cbs[i].apply(vm, args);
				}
			}
			return vm
		};
	}

	/*  */

	var activeInstance = null;

	function initLifecycle (vm) {
		var options = vm.$options;

		// locate first non-abstract parent
		var parent = options.parent;
		if (parent && !options.abstract) {
			while (parent.$options.abstract && parent.$parent) {
				parent = parent.$parent;
			}
			parent.$children.push(vm);
		}

		vm.$parent = parent;
		vm.$root = parent ? parent.$root : vm;

		vm.$children = [];
		vm.$refs = {};

		vm._watcher = null;
		vm._inactive = false;
		vm._isMounted = false;
		vm._isDestroyed = false;
		vm._isBeingDestroyed = false;
	}

	function lifecycleMixin (Vue) {
		Vue.prototype._mount = function (
			el,
			hydrating
		) {
			var vm = this;
			vm.$el = el;
			if (!vm.$options.render) {
				vm.$options.render = createEmptyVNode;
				{
					/* istanbul ignore if */
					if (vm.$options.template && vm.$options.template.charAt(0) !== '#') {
						warn(
							'You are using the runtime-only build of Vue where the template ' +
							'option is not available. Either pre-compile the templates into ' +
							'render functions, or use the compiler-included build.',
							vm
						);
					} else {
						warn(
							'Failed to mount component: template or render function not defined.',
							vm
						);
					}
				}
			}
			callHook(vm, 'beforeMount');
			vm._watcher = new Watcher(vm, function () {
				vm._update(vm._render(), hydrating);
			}, noop);
			hydrating = false;
			// manually mounted instance, call mounted on self
			// mounted is called for render-created child components in its inserted hook
			if (vm.$vnode == null) {
				vm._isMounted = true;
				callHook(vm, 'mounted');
			}
			return vm
		};

		Vue.prototype._update = function (vnode, hydrating) {
			var vm = this;
			if (vm._isMounted) {
				callHook(vm, 'beforeUpdate');
			}
			var prevEl = vm.$el;
			var prevVnode = vm._vnode;
			var prevActiveInstance = activeInstance;
			activeInstance = vm;
			vm._vnode = vnode;
			// Vue.prototype.__patch__ is injected in entry points
			// based on the rendering backend used.
			if (!prevVnode) {
				// initial render
				vm.$el = vm.__patch__(
					vm.$el, vnode, hydrating, false /* removeOnly */,
					vm.$options._parentElm,
					vm.$options._refElm
				);
			} else {
				// updates
				vm.$el = vm.__patch__(prevVnode, vnode);
			}
			activeInstance = prevActiveInstance;
			// update __vue__ reference
			if (prevEl) {
				prevEl.__vue__ = null;
			}
			if (vm.$el) {
				vm.$el.__vue__ = vm;
			}
			// if parent is an HOC, update its $el as well
			if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) {
				vm.$parent.$el = vm.$el;
			}
			if (vm._isMounted) {
				callHook(vm, 'updated');
			}
		};

		Vue.prototype._updateFromParent = function (
			propsData,
			listeners,
			parentVnode,
			renderChildren
		) {
			var vm = this;
			var hasChildren = !!(vm.$options._renderChildren || renderChildren);
			vm.$options._parentVnode = parentVnode;
			vm.$vnode = parentVnode; // update vm's placeholder node without re-render
			if (vm._vnode) { // update child tree's parent
				vm._vnode.parent = parentVnode;
			}
			vm.$options._renderChildren = renderChildren;
			// update props
			if (propsData && vm.$options.props) {
				observerState.shouldConvert = false;
				{
					observerState.isSettingProps = true;
				}
				var propKeys = vm.$options._propKeys || [];
				for (var i = 0; i < propKeys.length; i++) {
					var key = propKeys[i];
					vm[key] = validateProp(key, vm.$options.props, propsData, vm);
				}
				observerState.shouldConvert = true;
				{
					observerState.isSettingProps = false;
				}
				vm.$options.propsData = propsData;
			}
			// update listeners
			if (listeners) {
				var oldListeners = vm.$options._parentListeners;
				vm.$options._parentListeners = listeners;
				updateComponentListeners(vm, listeners, oldListeners);
			}
			// resolve slots + force update if has children
			if (hasChildren) {
				vm.$slots = resolveSlots(renderChildren, parentVnode.context);
				vm.$forceUpdate();
			}
		};

		Vue.prototype.$forceUpdate = function () {
			var vm = this;
			if (vm._watcher) {
				vm._watcher.update();
			}
		};

		Vue.prototype.$destroy = function () {
			var vm = this;
			if (vm._isBeingDestroyed) {
				return
			}
			callHook(vm, 'beforeDestroy');
			vm._isBeingDestroyed = true;
			// remove self from parent
			var parent = vm.$parent;
			if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) {
				remove$1(parent.$children, vm);
			}
			// teardown watchers
			if (vm._watcher) {
				vm._watcher.teardown();
			}
			var i = vm._watchers.length;
			while (i--) {
				vm._watchers[i].teardown();
			}
			// remove reference from data ob
			// frozen object may not have observer.
			if (vm._data.__ob__) {
				vm._data.__ob__.vmCount--;
			}
			// call the last hook...
			vm._isDestroyed = true;
			callHook(vm, 'destroyed');
			// turn off all instance listeners.
			vm.$off();
			// remove __vue__ reference
			if (vm.$el) {
				vm.$el.__vue__ = null;
			}
			// invoke destroy hooks on current rendered tree
			vm.__patch__(vm._vnode, null);
		};
	}

	function callHook (vm, hook) {
		var handlers = vm.$options[hook];
		if (handlers) {
			for (var i = 0, j = handlers.length; i < j; i++) {
				handlers[i].call(vm);
			}
		}
		if (vm._hasHookEvent) {
			vm.$emit('hook:' + hook);
		}
	}

	/*  */

	var hooks = { init: init, prepatch: prepatch, insert: insert, destroy: destroy$1 };
	var hooksToMerge = Object.keys(hooks);

	function createComponent (
		Ctor,
		data,
		context,
		children,
		tag
	) {
		if (!Ctor) {
			return
		}

		var baseCtor = context.$options._base;
		if (isObject(Ctor)) {
			Ctor = baseCtor.extend(Ctor);
		}

		if (typeof Ctor !== 'function') {
			{
				warn(("Invalid Component definition: " + (String(Ctor))), context);
			}
			return
		}

		// async component
		if (!Ctor.cid) {
			if (Ctor.resolved) {
				Ctor = Ctor.resolved;
			} else {
				Ctor = resolveAsyncComponent(Ctor, baseCtor, function () {
					// it's ok to queue this on every render because
					// $forceUpdate is buffered by the scheduler.
					context.$forceUpdate();
				});
				if (!Ctor) {
					// return nothing if this is indeed an async component
					// wait for the callback to trigger parent update.
					return
				}
			}
		}

		// resolve constructor options in case global mixins are applied after
		// component constructor creation
		resolveConstructorOptions(Ctor);

		data = data || {};

		// extract props
		var propsData = extractProps(data, Ctor);

		// functional component
		if (Ctor.options.functional) {
			return createFunctionalComponent(Ctor, propsData, data, context, children)
		}

		// extract listeners, since these needs to be treated as
		// child component listeners instead of DOM listeners
		var listeners = data.on;
		// replace with listeners with .native modifier
		data.on = data.nativeOn;

		if (Ctor.options.abstract) {
			// abstract components do not keep anything
			// other than props & listeners
			data = {};
		}

		// merge component management hooks onto the placeholder node
		mergeHooks(data);

		// return a placeholder vnode
		var name = Ctor.options.name || tag;
		var vnode = new VNode(
			("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')),
			data, undefined, undefined, undefined, context,
			{ Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children }
		);
		return vnode
	}

	function createFunctionalComponent (
		Ctor,
		propsData,
		data,
		context,
		children
	) {
		var props = {};
		var propOptions = Ctor.options.props;
		if (propOptions) {
			for (var key in propOptions) {
				props[key] = validateProp(key, propOptions, propsData);
			}
		}
		// ensure the createElement function in functional components
		// gets a unique context - this is necessary for correct named slot check
		var _context = Object.create(context);
		var h = function (a, b, c, d) { return createElement(_context, a, b, c, d, true); };
		var vnode = Ctor.options.render.call(null, h, {
			props: props,
			data: data,
			parent: context,
			children: children,
			slots: function () { return resolveSlots(children, context); }
		});
		if (vnode instanceof VNode) {
			vnode.functionalContext = context;
			if (data.slot) {
				(vnode.data || (vnode.data = {})).slot = data.slot;
			}
		}
		return vnode
	}

	function createComponentInstanceForVnode (
		vnode, // we know it's MountedComponentVNode but flow doesn't
		parent, // activeInstance in lifecycle state
		parentElm,
		refElm
	) {
		var vnodeComponentOptions = vnode.componentOptions;
		var options = {
			_isComponent: true,
			parent: parent,
			propsData: vnodeComponentOptions.propsData,
			_componentTag: vnodeComponentOptions.tag,
			_parentVnode: vnode,
			_parentListeners: vnodeComponentOptions.listeners,
			_renderChildren: vnodeComponentOptions.children,
			_parentElm: parentElm || null,
			_refElm: refElm || null
		};
		// check inline-template render functions
		var inlineTemplate = vnode.data.inlineTemplate;
		if (inlineTemplate) {
			options.render = inlineTemplate.render;
			options.staticRenderFns = inlineTemplate.staticRenderFns;
		}
		return new vnodeComponentOptions.Ctor(options)
	}

	function init (
		vnode,
		hydrating,
		parentElm,
		refElm
	) {
		if (!vnode.child || vnode.child._isDestroyed) {
			var child = vnode.child = createComponentInstanceForVnode(
				vnode,
				activeInstance,
				parentElm,
				refElm
			);
			child.$mount(hydrating ? vnode.elm : undefined, hydrating);
		} else if (vnode.data.keepAlive) {
			// kept-alive components, treat as a patch
			var mountedNode = vnode; // work around flow
			prepatch(mountedNode, mountedNode);
		}
	}

	function prepatch (
		oldVnode,
		vnode
	) {
		var options = vnode.componentOptions;
		var child = vnode.child = oldVnode.child;
		child._updateFromParent(
			options.propsData, // updated props
			options.listeners, // updated listeners
			vnode, // new parent vnode
			options.children // new children
		);
	}

	function insert (vnode) {
		if (!vnode.child._isMounted) {
			vnode.child._isMounted = true;
			callHook(vnode.child, 'mounted');
		}
		if (vnode.data.keepAlive) {
			vnode.child._inactive = false;
			callHook(vnode.child, 'activated');
		}
	}

	function destroy$1 (vnode) {
		if (!vnode.child._isDestroyed) {
			if (!vnode.data.keepAlive) {
				vnode.child.$destroy();
			} else {
				vnode.child._inactive = true;
				callHook(vnode.child, 'deactivated');
			}
		}
	}

	function resolveAsyncComponent (
		factory,
		baseCtor,
		cb
	) {
		if (factory.requested) {
			// pool callbacks
			factory.pendingCallbacks.push(cb);
		} else {
			factory.requested = true;
			var cbs = factory.pendingCallbacks = [cb];
			var sync = true;

			var resolve = function (res) {
				if (isObject(res)) {
					res = baseCtor.extend(res);
				}
				// cache resolved
				factory.resolved = res;
				// invoke callbacks only if this is not a synchronous resolve
				// (async resolves are shimmed as synchronous during SSR)
				if (!sync) {
					for (var i = 0, l = cbs.length; i < l; i++) {
						cbs[i](res);
					}
				}
			};

			var reject = function (reason) {
				"development" !== 'production' && warn(
					"Failed to resolve async component: " + (String(factory)) +
					(reason ? ("\nReason: " + reason) : '')
				);
			};

			var res = factory(resolve, reject);

			// handle promise
			if (res && typeof res.then === 'function' && !factory.resolved) {
				res.then(resolve, reject);
			}

			sync = false;
			// return in case resolved synchronously
			return factory.resolved
		}
	}

	function extractProps (data, Ctor) {
		// we are only extracting raw values here.
		// validation and default values are handled in the child
		// component itself.
		var propOptions = Ctor.options.props;
		if (!propOptions) {
			return
		}
		var res = {};
		var attrs = data.attrs;
		var props = data.props;
		var domProps = data.domProps;
		if (attrs || props || domProps) {
			for (var key in propOptions) {
				var altKey = hyphenate(key);
				checkProp(res, props, key, altKey, true) ||
				checkProp(res, attrs, key, altKey) ||
				checkProp(res, domProps, key, altKey);
			}
		}
		return res
	}

	function checkProp (
		res,
		hash,
		key,
		altKey,
		preserve
	) {
		if (hash) {
			if (hasOwn(hash, key)) {
				res[key] = hash[key];
				if (!preserve) {
					delete hash[key];
				}
				return true
			} else if (hasOwn(hash, altKey)) {
				res[key] = hash[altKey];
				if (!preserve) {
					delete hash[altKey];
				}
				return true
			}
		}
		return false
	}

	function mergeHooks (data) {
		if (!data.hook) {
			data.hook = {};
		}
		for (var i = 0; i < hooksToMerge.length; i++) {
			var key = hooksToMerge[i];
			var fromParent = data.hook[key];
			var ours = hooks[key];
			data.hook[key] = fromParent ? mergeHook$1(ours, fromParent) : ours;
		}
	}

	function mergeHook$1 (one, two) {
		return function (a, b, c, d) {
			one(a, b, c, d);
			two(a, b, c, d);
		}
	}

	/*  */

	var SIMPLE_NORMALIZE = 1;
	var ALWAYS_NORMALIZE = 2;

// wrapper function for providing a more flexible interface
// without getting yelled at by flow
	function createElement (
		context,
		tag,
		data,
		children,
		normalizationType,
		alwaysNormalize
	) {
		if (Array.isArray(data) || isPrimitive(data)) {
			normalizationType = children;
			children = data;
			data = undefined;
		}
		if (alwaysNormalize) { normalizationType = ALWAYS_NORMALIZE; }
		return _createElement(context, tag, data, children, normalizationType)
	}

	function _createElement (
		context,
		tag,
		data,
		children,
		normalizationType
	) {
		if (data && data.__ob__) {
			"development" !== 'production' && warn(
				"Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" +
				'Always create fresh vnode data objects in each render!',
				context
			);
			return createEmptyVNode()
		}
		if (!tag) {
			// in case of component :is set to falsy value
			return createEmptyVNode()
		}
		// support single function children as default scoped slot
		if (Array.isArray(children) &&
			typeof children[0] === 'function') {
			data = data || {};
			data.scopedSlots = { default: children[0] };
			children.length = 0;
		}
		if (normalizationType === ALWAYS_NORMALIZE) {
			children = normalizeChildren(children);
		} else if (normalizationType === SIMPLE_NORMALIZE) {
			children = simpleNormalizeChildren(children);
		}
		var vnode, ns;
		if (typeof tag === 'string') {
			var Ctor;
			ns = config.getTagNamespace(tag);
			if (config.isReservedTag(tag)) {
				// platform built-in elements
				vnode = new VNode(
					config.parsePlatformTagName(tag), data, children,
					undefined, undefined, context
				);
			} else if ((Ctor = resolveAsset(context.$options, 'components', tag))) {
				// component
				vnode = createComponent(Ctor, data, context, children, tag);
			} else {
				// unknown or unlisted namespaced elements
				// check at runtime because it may get assigned a namespace when its
				// parent normalizes children
				vnode = new VNode(
					tag, data, children,
					undefined, undefined, context
				);
			}
		} else {
			// direct component options / constructor
			vnode = createComponent(tag, data, context, children);
		}
		if (vnode) {
			if (ns) { applyNS(vnode, ns); }
			return vnode
		} else {
			return createEmptyVNode()
		}
	}

	function applyNS (vnode, ns) {
		vnode.ns = ns;
		if (vnode.tag === 'foreignObject') {
			// use default namespace inside foreignObject
			return
		}
		if (vnode.children) {
			for (var i = 0, l = vnode.children.length; i < l; i++) {
				var child = vnode.children[i];
				if (child.tag && !child.ns) {
					applyNS(child, ns);
				}
			}
		}
	}

	/*  */

	function initRender (vm) {
		vm.$vnode = null; // the placeholder node in parent tree
		vm._vnode = null; // the root of the child tree
		vm._staticTrees = null;
		var parentVnode = vm.$options._parentVnode;
		var renderContext = parentVnode && parentVnode.context;
		vm.$slots = resolveSlots(vm.$options._renderChildren, renderContext);
		vm.$scopedSlots = {};
		// bind the createElement fn to this instance
		// so that we get proper render context inside it.
		// args order: tag, data, children, normalizationType, alwaysNormalize
		// internal version is used by render functions compiled from templates
		vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); };
		// normalization is always applied for the public version, used in
		// user-written render functions.
		vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); };
		if (vm.$options.el) {
			vm.$mount(vm.$options.el);
		}
	}

	function renderMixin (Vue) {
		Vue.prototype.$nextTick = function (fn) {
			return nextTick(fn, this)
		};

		Vue.prototype._render = function () {
			var vm = this;
			var ref = vm.$options;
			var render = ref.render;
			var staticRenderFns = ref.staticRenderFns;
			var _parentVnode = ref._parentVnode;

			if (vm._isMounted) {
				// clone slot nodes on re-renders
				for (var key in vm.$slots) {
					vm.$slots[key] = cloneVNodes(vm.$slots[key]);
				}
			}

			if (_parentVnode && _parentVnode.data.scopedSlots) {
				vm.$scopedSlots = _parentVnode.data.scopedSlots;
			}

			if (staticRenderFns && !vm._staticTrees) {
				vm._staticTrees = [];
			}
			// set parent vnode. this allows render functions to have access
			// to the data on the placeholder node.
			vm.$vnode = _parentVnode;
			// render self
			var vnode;
			try {
				vnode = render.call(vm._renderProxy, vm.$createElement);
			} catch (e) {
				/* istanbul ignore else */
				if (config.errorHandler) {
					config.errorHandler.call(null, e, vm);
				} else {
					{
						warn(("Error when rendering " + (formatComponentName(vm)) + ":"));
					}
					throw e
				}
				// return previous vnode to prevent render error causing blank component
				vnode = vm._vnode;
			}
			// return empty vnode in case the render function errored out
			if (!(vnode instanceof VNode)) {
				if ("development" !== 'production' && Array.isArray(vnode)) {
					warn(
						'Multiple root nodes returned from render function. Render function ' +
						'should return a single root node.',
						vm
					);
				}
				vnode = createEmptyVNode();
			}
			// set parent
			vnode.parent = _parentVnode;
			return vnode
		};

		// toString for mustaches
		Vue.prototype._s = _toString;
		// convert text to vnode
		Vue.prototype._v = createTextVNode;
		// number conversion
		Vue.prototype._n = toNumber;
		// empty vnode
		Vue.prototype._e = createEmptyVNode;
		// loose equal
		Vue.prototype._q = looseEqual;
		// loose indexOf
		Vue.prototype._i = looseIndexOf;

		// render static tree by index
		Vue.prototype._m = function renderStatic (
			index,
			isInFor
		) {
			var tree = this._staticTrees[index];
			// if has already-rendered static tree and not inside v-for,
			// we can reuse the same tree by doing a shallow clone.
			if (tree && !isInFor) {
				return Array.isArray(tree)
					? cloneVNodes(tree)
					: cloneVNode(tree)
			}
			// otherwise, render a fresh tree.
			tree = this._staticTrees[index] = this.$options.staticRenderFns[index].call(this._renderProxy);
			markStatic(tree, ("__static__" + index), false);
			return tree
		};

		// mark node as static (v-once)
		Vue.prototype._o = function markOnce (
			tree,
			index,
			key
		) {
			markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true);
			return tree
		};

		function markStatic (tree, key, isOnce) {
			if (Array.isArray(tree)) {
				for (var i = 0; i < tree.length; i++) {
					if (tree[i] && typeof tree[i] !== 'string') {
						markStaticNode(tree[i], (key + "_" + i), isOnce);
					}
				}
			} else {
				markStaticNode(tree, key, isOnce);
			}
		}

		function markStaticNode (node, key, isOnce) {
			node.isStatic = true;
			node.key = key;
			node.isOnce = isOnce;
		}

		// filter resolution helper
		Vue.prototype._f = function resolveFilter (id) {
			return resolveAsset(this.$options, 'filters', id, true) || identity
		};

		// render v-for
		Vue.prototype._l = function renderList (
			val,
			render
		) {
			var ret, i, l, keys, key;
			if (Array.isArray(val) || typeof val === 'string') {
				ret = new Array(val.length);
				for (i = 0, l = val.length; i < l; i++) {
					ret[i] = render(val[i], i);
				}
			} else if (typeof val === 'number') {
				ret = new Array(val);
				for (i = 0; i < val; i++) {
					ret[i] = render(i + 1, i);
				}
			} else if (isObject(val)) {
				keys = Object.keys(val);
				ret = new Array(keys.length);
				for (i = 0, l = keys.length; i < l; i++) {
					key = keys[i];
					ret[i] = render(val[key], key, i);
				}
			}
			return ret
		};

		// renderSlot
		Vue.prototype._t = function (
			name,
			fallback,
			props,
			bindObject
		) {
			var scopedSlotFn = this.$scopedSlots[name];
			if (scopedSlotFn) { // scoped slot
				props = props || {};
				if (bindObject) {
					extend(props, bindObject);
				}
				return scopedSlotFn(props) || fallback
			} else {
				var slotNodes = this.$slots[name];
				// warn duplicate slot usage
				if (slotNodes && "development" !== 'production') {
					slotNodes._rendered && warn(
						"Duplicate presence of slot \"" + name + "\" found in the same render tree " +
						"- this will likely cause render errors.",
						this
					);
					slotNodes._rendered = true;
				}
				return slotNodes || fallback
			}
		};

		// apply v-bind object
		Vue.prototype._b = function bindProps (
			data,
			tag,
			value,
			asProp
		) {
			if (value) {
				if (!isObject(value)) {
					"development" !== 'production' && warn(
						'v-bind without argument expects an Object or Array value',
						this
					);
				} else {
					if (Array.isArray(value)) {
						value = toObject(value);
					}
					for (var key in value) {
						if (key === 'class' || key === 'style') {
							data[key] = value[key];
						} else {
							var hash = asProp || config.mustUseProp(tag, key)
								? data.domProps || (data.domProps = {})
								: data.attrs || (data.attrs = {});
							hash[key] = value[key];
						}
					}
				}
			}
			return data
		};

		// check v-on keyCodes
		Vue.prototype._k = function checkKeyCodes (
			eventKeyCode,
			key,
			builtInAlias
		) {
			var keyCodes = config.keyCodes[key] || builtInAlias;
			if (Array.isArray(keyCodes)) {
				return keyCodes.indexOf(eventKeyCode) === -1
			} else {
				return keyCodes !== eventKeyCode
			}
		};
	}

	function resolveSlots (
		children,
		context
	) {
		var slots = {};
		if (!children) {
			return slots
		}
		var defaultSlot = [];
		var name, child;
		for (var i = 0, l = children.length; i < l; i++) {
			child = children[i];
			// named slots should only be respected if the vnode was rendered in the
			// same context.
			if ((child.context === context || child.functionalContext === context) &&
				child.data && (name = child.data.slot)) {
				var slot = (slots[name] || (slots[name] = []));
				if (child.tag === 'template') {
					slot.push.apply(slot, child.children);
				} else {
					slot.push(child);
				}
			} else {
				defaultSlot.push(child);
			}
		}
		// ignore single whitespace
		if (defaultSlot.length && !(
				defaultSlot.length === 1 &&
				(defaultSlot[0].text === ' ' || defaultSlot[0].isComment)
			)) {
			slots.default = defaultSlot;
		}
		return slots
	}

	/*  */

	var uid = 0;

	function initMixin (Vue) {
		Vue.prototype._init = function (options) {
			var vm = this;
			// a uid
			vm._uid = uid++;
			// a flag to avoid this being observed
			vm._isVue = true;
			// merge options
			if (options && options._isComponent) {
				// optimize internal component instantiation
				// since dynamic options merging is pretty slow, and none of the
				// internal component options needs special treatment.
				initInternalComponent(vm, options);
			} else {
				vm.$options = mergeOptions(
					resolveConstructorOptions(vm.constructor),
					options || {},
					vm
				);
			}
			/* istanbul ignore else */
			{
				initProxy(vm);
			}
			// expose real self
			vm._self = vm;
			initLifecycle(vm);
			initEvents(vm);
			callHook(vm, 'beforeCreate');
			initState(vm);
			callHook(vm, 'created');
			initRender(vm);
		};
	}

	function initInternalComponent (vm, options) {
		var opts = vm.$options = Object.create(vm.constructor.options);
		// doing this because it's faster than dynamic enumeration.
		opts.parent = options.parent;
		opts.propsData = options.propsData;
		opts._parentVnode = options._parentVnode;
		opts._parentListeners = options._parentListeners;
		opts._renderChildren = options._renderChildren;
		opts._componentTag = options._componentTag;
		opts._parentElm = options._parentElm;
		opts._refElm = options._refElm;
		if (options.render) {
			opts.render = options.render;
			opts.staticRenderFns = options.staticRenderFns;
		}
	}

	function resolveConstructorOptions (Ctor) {
		var options = Ctor.options;
		if (Ctor.super) {
			var superOptions = Ctor.super.options;
			var cachedSuperOptions = Ctor.superOptions;
			var extendOptions = Ctor.extendOptions;
			if (superOptions !== cachedSuperOptions) {
				// super option changed
				Ctor.superOptions = superOptions;
				extendOptions.render = options.render;
				extendOptions.staticRenderFns = options.staticRenderFns;
				extendOptions._scopeId = options._scopeId;
				options = Ctor.options = mergeOptions(superOptions, extendOptions);
				if (options.name) {
					options.components[options.name] = Ctor;
				}
			}
		}
		return options
	}

	function Vue$3 (options) {
		if ("development" !== 'production' &&
			!(this instanceof Vue$3)) {
			warn('Vue is a constructor and should be called with the `new` keyword');
		}
		this._init(options);
	}

	initMixin(Vue$3);
	stateMixin(Vue$3);
	eventsMixin(Vue$3);
	lifecycleMixin(Vue$3);
	renderMixin(Vue$3);

	/*  */

	function initUse (Vue) {
		Vue.use = function (plugin) {
			/* istanbul ignore if */
			if (plugin.installed) {
				return
			}
			// additional parameters
			var args = toArray(arguments, 1);
			args.unshift(this);
			if (typeof plugin.install === 'function') {
				plugin.install.apply(plugin, args);
			} else {
				plugin.apply(null, args);
			}
			plugin.installed = true;
			return this
		};
	}

	/*  */

	function initMixin$1 (Vue) {
		Vue.mixin = function (mixin) {
			this.options = mergeOptions(this.options, mixin);
		};
	}

	/*  */

	function initExtend (Vue) {
		/**
		 * Each instance constructor, including Vue, has a unique
		 * cid. This enables us to create wrapped "child
		 * constructors" for prototypal inheritance and cache them.
		 */
		Vue.cid = 0;
		var cid = 1;

		/**
		 * Class inheritance
		 */
		Vue.extend = function (extendOptions) {
			extendOptions = extendOptions || {};
			var Super = this;
			var SuperId = Super.cid;
			var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {});
			if (cachedCtors[SuperId]) {
				return cachedCtors[SuperId]
			}
			var name = extendOptions.name || Super.options.name;
			{
				if (!/^[a-zA-Z][\w-]*$/.test(name)) {
					warn(
						'Invalid component name: "' + name + '". Component names ' +
						'can only contain alphanumeric characters and the hyphen, ' +
						'and must start with a letter.'
					);
				}
			}
			var Sub = function VueComponent (options) {
				this._init(options);
			};
			Sub.prototype = Object.create(Super.prototype);
			Sub.prototype.constructor = Sub;
			Sub.cid = cid++;
			Sub.options = mergeOptions(
				Super.options,
				extendOptions
			);
			Sub['super'] = Super;
			// allow further extension/mixin/plugin usage
			Sub.extend = Super.extend;
			Sub.mixin = Super.mixin;
			Sub.use = Super.use;
			// create asset registers, so extended classes
			// can have their private assets too.
			config._assetTypes.forEach(function (type) {
				Sub[type] = Super[type];
			});
			// enable recursive self-lookup
			if (name) {
				Sub.options.components[name] = Sub;
			}
			// keep a reference to the super options at extension time.
			// later at instantiation we can check if Super's options have
			// been updated.
			Sub.superOptions = Super.options;
			Sub.extendOptions = extendOptions;
			// cache constructor
			cachedCtors[SuperId] = Sub;
			return Sub
		};
	}

	/*  */

	function initAssetRegisters (Vue) {
		/**
		 * Create asset registration methods.
		 */
		config._assetTypes.forEach(function (type) {
			Vue[type] = function (
				id,
				definition
			) {
				if (!definition) {
					return this.options[type + 's'][id]
				} else {
					/* istanbul ignore if */
					{
						if (type === 'component' && config.isReservedTag(id)) {
							warn(
								'Do not use built-in or reserved HTML elements as component ' +
								'id: ' + id
							);
						}
					}
					if (type === 'component' && isPlainObject(definition)) {
						definition.name = definition.name || id;
						definition = this.options._base.extend(definition);
					}
					if (type === 'directive' && typeof definition === 'function') {
						definition = { bind: definition, update: definition };
					}
					this.options[type + 's'][id] = definition;
					return definition
				}
			};
		});
	}

	/*  */

	var patternTypes = [String, RegExp];

	function matches (pattern, name) {
		if (typeof pattern === 'string') {
			return pattern.split(',').indexOf(name) > -1
		} else {
			return pattern.test(name)
		}
	}

	var KeepAlive = {
		name: 'keep-alive',
		abstract: true,
		props: {
			include: patternTypes,
			exclude: patternTypes
		},
		created: function created () {
			this.cache = Object.create(null);
		},
		render: function render () {
			var vnode = getFirstComponentChild(this.$slots.default);
			if (vnode && vnode.componentOptions) {
				var opts = vnode.componentOptions;
				// check pattern
				var name = opts.Ctor.options.name || opts.tag;
				if (name && (
						(this.include && !matches(this.include, name)) ||
						(this.exclude && matches(this.exclude, name))
					)) {
					return vnode
				}
				var key = vnode.key == null
					// same constructor may get registered as different local components
					// so cid alone is not enough (#3269)
					? opts.Ctor.cid + (opts.tag ? ("::" + (opts.tag)) : '')
					: vnode.key;
				if (this.cache[key]) {
					vnode.child = this.cache[key].child;
				} else {
					this.cache[key] = vnode;
				}
				vnode.data.keepAlive = true;
			}
			return vnode
		},
		destroyed: function destroyed () {
			var this$1 = this;

			for (var key in this.cache) {
				var vnode = this$1.cache[key];
				callHook(vnode.child, 'deactivated');
				vnode.child.$destroy();
			}
		}
	};

	var builtInComponents = {
		KeepAlive: KeepAlive
	};

	/*  */

	function initGlobalAPI (Vue) {
		// config
		var configDef = {};
		configDef.get = function () { return config; };
		{
			configDef.set = function () {
				warn(
					'Do not replace the Vue.config object, set individual fields instead.'
				);
			};
		}
		Object.defineProperty(Vue, 'config', configDef);
		Vue.util = util;
		Vue.set = set$1;
		Vue.delete = del;
		Vue.nextTick = nextTick;

		Vue.options = Object.create(null);
		config._assetTypes.forEach(function (type) {
			Vue.options[type + 's'] = Object.create(null);
		});

		// this is used to identify the "base" constructor to extend all plain-object
		// components with in Weex's multi-instance scenarios.
		Vue.options._base = Vue;

		extend(Vue.options.components, builtInComponents);

		initUse(Vue);
		initMixin$1(Vue);
		initExtend(Vue);
		initAssetRegisters(Vue);
	}

	initGlobalAPI(Vue$3);

	Object.defineProperty(Vue$3.prototype, '$isServer', {
		get: isServerRendering
	});

	Vue$3.version = '2.1.8';

	/*  */

// attributes that should be using props for binding
	var acceptValue = makeMap('input,textarea,option,select');
	var mustUseProp = function (tag, attr) {
		return (
			(attr === 'value' && acceptValue(tag)) ||
			(attr === 'selected' && tag === 'option') ||
			(attr === 'checked' && tag === 'input') ||
			(attr === 'muted' && tag === 'video')
		)
	};

	var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck');

	var isBooleanAttr = makeMap(
		'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' +
		'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' +
		'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' +
		'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' +
		'required,reversed,scoped,seamless,selected,sortable,translate,' +
		'truespeed,typemustmatch,visible'
	);

	var xlinkNS = 'http://www.w3.org/1999/xlink';

	var isXlink = function (name) {
		return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink'
	};

	var getXlinkProp = function (name) {
		return isXlink(name) ? name.slice(6, name.length) : ''
	};

	var isFalsyAttrValue = function (val) {
		return val == null || val === false
	};

	/*  */

	function genClassForVnode (vnode) {
		var data = vnode.data;
		var parentNode = vnode;
		var childNode = vnode;
		while (childNode.child) {
			childNode = childNode.child._vnode;
			if (childNode.data) {
				data = mergeClassData(childNode.data, data);
			}
		}
		while ((parentNode = parentNode.parent)) {
			if (parentNode.data) {
				data = mergeClassData(data, parentNode.data);
			}
		}
		return genClassFromData(data)
	}

	function mergeClassData (child, parent) {
		return {
			staticClass: concat(child.staticClass, parent.staticClass),
			class: child.class
				? [child.class, parent.class]
				: parent.class
		}
	}

	function genClassFromData (data) {
		var dynamicClass = data.class;
		var staticClass = data.staticClass;
		if (staticClass || dynamicClass) {
			return concat(staticClass, stringifyClass(dynamicClass))
		}
		/* istanbul ignore next */
		return ''
	}

	function concat (a, b) {
		return a ? b ? (a + ' ' + b) : a : (b || '')
	}

	function stringifyClass (value) {
		var res = '';
		if (!value) {
			return res
		}
		if (typeof value === 'string') {
			return value
		}
		if (Array.isArray(value)) {
			var stringified;
			for (var i = 0, l = value.length; i < l; i++) {
				if (value[i]) {
					if ((stringified = stringifyClass(value[i]))) {
						res += stringified + ' ';
					}
				}
			}
			return res.slice(0, -1)
		}
		if (isObject(value)) {
			for (var key in value) {
				if (value[key]) { res += key + ' '; }
			}
			return res.slice(0, -1)
		}
		/* istanbul ignore next */
		return res
	}

	/*  */

	var namespaceMap = {
		svg: 'http://www.w3.org/2000/svg',
		math: 'http://www.w3.org/1998/Math/MathML'
	};

	var isHTMLTag = makeMap(
		'html,body,base,head,link,meta,style,title,' +
		'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' +
		'div,dd,dl,dt,figcaption,figure,hr,img,li,main,ol,p,pre,ul,' +
		'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' +
		's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' +
		'embed,object,param,source,canvas,script,noscript,del,ins,' +
		'caption,col,colgroup,table,thead,tbody,td,th,tr,' +
		'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' +
		'output,progress,select,textarea,' +
		'details,dialog,menu,menuitem,summary,' +
		'content,element,shadow,template'
	);

// this map is intentionally selective, only covering SVG elements that may
// contain child elements.
	var isSVG = makeMap(
		'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,' +
		'font-face,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' +
		'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view',
		true
	);

	var isPreTag = function (tag) { return tag === 'pre'; };

	var isReservedTag = function (tag) {
		return isHTMLTag(tag) || isSVG(tag)
	};

	function getTagNamespace (tag) {
		if (isSVG(tag)) {
			return 'svg'
		}
		// basic support for MathML
		// note it doesn't support other MathML elements being component roots
		if (tag === 'math') {
			return 'math'
		}
	}

	var unknownElementCache = Object.create(null);
	function isUnknownElement (tag) {
		/* istanbul ignore if */
		if (!inBrowser) {
			return true
		}
		if (isReservedTag(tag)) {
			return false
		}
		tag = tag.toLowerCase();
		/* istanbul ignore if */
		if (unknownElementCache[tag] != null) {
			return unknownElementCache[tag]
		}
		var el = document.createElement(tag);
		if (tag.indexOf('-') > -1) {
			// http://stackoverflow.com/a/28210364/1070244
			return (unknownElementCache[tag] = (
				el.constructor === window.HTMLUnknownElement ||
				el.constructor === window.HTMLElement
			))
		} else {
			return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString()))
		}
	}

	/*  */

	/**
	 * Query an element selector if it's not an element already.
	 */
	function query (el) {
		if (typeof el === 'string') {
			var selector = el;
			el = document.querySelector(el);
			if (!el) {
				"development" !== 'production' && warn(
					'Cannot find element: ' + selector
				);
				return document.createElement('div')
			}
		}
		return el
	}

	/*  */

	function createElement$1 (tagName, vnode) {
		var elm = document.createElement(tagName);
		if (tagName !== 'select') {
			return elm
		}
		if (vnode.data && vnode.data.attrs && 'multiple' in vnode.data.attrs) {
			elm.setAttribute('multiple', 'multiple');
		}
		return elm
	}

	function createElementNS (namespace, tagName) {
		return document.createElementNS(namespaceMap[namespace], tagName)
	}

	function createTextNode (text) {
		return document.createTextNode(text)
	}

	function createComment (text) {
		return document.createComment(text)
	}

	function insertBefore (parentNode, newNode, referenceNode) {
		parentNode.insertBefore(newNode, referenceNode);
	}

	function removeChild (node, child) {
		node.removeChild(child);
	}

	function appendChild (node, child) {
		node.appendChild(child);
	}

	function parentNode (node) {
		return node.parentNode
	}

	function nextSibling (node) {
		return node.nextSibling
	}

	function tagName (node) {
		return node.tagName
	}

	function setTextContent (node, text) {
		node.textContent = text;
	}

	function setAttribute (node, key, val) {
		node.setAttribute(key, val);
	}


	var nodeOps = Object.freeze({
		createElement: createElement$1,
		createElementNS: createElementNS,
		createTextNode: createTextNode,
		createComment: createComment,
		insertBefore: insertBefore,
		removeChild: removeChild,
		appendChild: appendChild,
		parentNode: parentNode,
		nextSibling: nextSibling,
		tagName: tagName,
		setTextContent: setTextContent,
		setAttribute: setAttribute
	});

	/*  */

	var ref = {
		create: function create (_, vnode) {
			registerRef(vnode);
		},
		update: function update (oldVnode, vnode) {
			if (oldVnode.data.ref !== vnode.data.ref) {
				registerRef(oldVnode, true);
				registerRef(vnode);
			}
		},
		destroy: function destroy (vnode) {
			registerRef(vnode, true);
		}
	};

	function registerRef (vnode, isRemoval) {
		var key = vnode.data.ref;
		if (!key) { return }

		var vm = vnode.context;
		var ref = vnode.child || vnode.elm;
		var refs = vm.$refs;
		if (isRemoval) {
			if (Array.isArray(refs[key])) {
				remove$1(refs[key], ref);
			} else if (refs[key] === ref) {
				refs[key] = undefined;
			}
		} else {
			if (vnode.data.refInFor) {
				if (Array.isArray(refs[key]) && refs[key].indexOf(ref) < 0) {
					refs[key].push(ref);
				} else {
					refs[key] = [ref];
				}
			} else {
				refs[key] = ref;
			}
		}
	}

	/**
	 * Virtual DOM patching algorithm based on Snabbdom by
	 * Simon Friis Vindum (@paldepind)
	 * Licensed under the MIT License
	 * https://github.com/paldepind/snabbdom/blob/master/LICENSE
	 *
	 * modified by Evan You (@yyx990803)
	 *

	 /*
	 * Not type-checking this because this file is perf-critical and the cost
	 * of making flow understand it is not worth it.
	 */

	var emptyNode = new VNode('', {}, []);

	var hooks$1 = ['create', 'activate', 'update', 'remove', 'destroy'];

	function isUndef (s) {
		return s == null
	}

	function isDef (s) {
		return s != null
	}

	function sameVnode (vnode1, vnode2) {
		return (
			vnode1.key === vnode2.key &&
			vnode1.tag === vnode2.tag &&
			vnode1.isComment === vnode2.isComment &&
			!vnode1.data === !vnode2.data
		)
	}

	function createKeyToOldIdx (children, beginIdx, endIdx) {
		var i, key;
		var map = {};
		for (i = beginIdx; i <= endIdx; ++i) {
			key = children[i].key;
			if (isDef(key)) { map[key] = i; }
		}
		return map
	}

	function createPatchFunction (backend) {
		var i, j;
		var cbs = {};

		var modules = backend.modules;
		var nodeOps = backend.nodeOps;

		for (i = 0; i < hooks$1.length; ++i) {
			cbs[hooks$1[i]] = [];
			for (j = 0; j < modules.length; ++j) {
				if (modules[j][hooks$1[i]] !== undefined) { cbs[hooks$1[i]].push(modules[j][hooks$1[i]]); }
			}
		}

		function emptyNodeAt (elm) {
			return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm)
		}

		function createRmCb (childElm, listeners) {
			function remove$$1 () {
				if (--remove$$1.listeners === 0) {
					removeNode(childElm);
				}
			}
			remove$$1.listeners = listeners;
			return remove$$1
		}

		function removeNode (el) {
			var parent = nodeOps.parentNode(el);
			// element may have already been removed due to v-html / v-text
			if (parent) {
				nodeOps.removeChild(parent, el);
			}
		}

		var inPre = 0;
		function createElm (vnode, insertedVnodeQueue, parentElm, refElm, nested) {
			vnode.isRootInsert = !nested; // for transition enter check
			if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) {
				return
			}

			var data = vnode.data;
			var children = vnode.children;
			var tag = vnode.tag;
			if (isDef(tag)) {
				{
					if (data && data.pre) {
						inPre++;
					}
					if (
						!inPre &&
						!vnode.ns &&
						!(config.ignoredElements.length && config.ignoredElements.indexOf(tag) > -1) &&
						config.isUnknownElement(tag)
					) {
						warn(
							'Unknown custom element: <' + tag + '> - did you ' +
							'register the component correctly? For recursive components, ' +
							'make sure to provide the "name" option.',
							vnode.context
						);
					}
				}
				vnode.elm = vnode.ns
					? nodeOps.createElementNS(vnode.ns, tag)
					: nodeOps.createElement(tag, vnode);
				setScope(vnode);

				/* istanbul ignore if */
				{
					createChildren(vnode, children, insertedVnodeQueue);
					if (isDef(data)) {
						invokeCreateHooks(vnode, insertedVnodeQueue);
					}
					insert(parentElm, vnode.elm, refElm);
				}

				if ("development" !== 'production' && data && data.pre) {
					inPre--;
				}
			} else if (vnode.isComment) {
				vnode.elm = nodeOps.createComment(vnode.text);
				insert(parentElm, vnode.elm, refElm);
			} else {
				vnode.elm = nodeOps.createTextNode(vnode.text);
				insert(parentElm, vnode.elm, refElm);
			}
		}

		function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
			var i = vnode.data;
			if (isDef(i)) {
				var isReactivated = isDef(vnode.child) && i.keepAlive;
				if (isDef(i = i.hook) && isDef(i = i.init)) {
					i(vnode, false /* hydrating */, parentElm, refElm);
				}
				// after calling the init hook, if the vnode is a child component
				// it should've created a child instance and mounted it. the child
				// component also has set the placeholder vnode's elm.
				// in that case we can just return the element and be done.
				if (isDef(vnode.child)) {
					initComponent(vnode, insertedVnodeQueue);
					if (isReactivated) {
						reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm);
					}
					return true
				}
			}
		}

		function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) {
			var i;
			// hack for #4339: a reactivated component with inner transition
			// does not trigger because the inner node's created hooks are not called
			// again. It's not ideal to involve module-specific logic in here but
			// there doesn't seem to be a better way to do it.
			var innerNode = vnode;
			while (innerNode.child) {
				innerNode = innerNode.child._vnode;
				if (isDef(i = innerNode.data) && isDef(i = i.transition)) {
					for (i = 0; i < cbs.activate.length; ++i) {
						cbs.activate[i](emptyNode, innerNode);
					}
					insertedVnodeQueue.push(innerNode);
					break
				}
			}
			// unlike a newly created component,
			// a reactivated keep-alive component doesn't insert itself
			insert(parentElm, vnode.elm, refElm);
		}

		function insert (parent, elm, ref) {
			if (parent) {
				if (ref) {
					nodeOps.insertBefore(parent, elm, ref);
				} else {
					nodeOps.appendChild(parent, elm);
				}
			}
		}

		function createChildren (vnode, children, insertedVnodeQueue) {
			if (Array.isArray(children)) {
				for (var i = 0; i < children.length; ++i) {
					createElm(children[i], insertedVnodeQueue, vnode.elm, null, true);
				}
			} else if (isPrimitive(vnode.text)) {
				nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(vnode.text));
			}
		}

		function isPatchable (vnode) {
			while (vnode.child) {
				vnode = vnode.child._vnode;
			}
			return isDef(vnode.tag)
		}

		function invokeCreateHooks (vnode, insertedVnodeQueue) {
			for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) {
				cbs.create[i$1](emptyNode, vnode);
			}
			i = vnode.data.hook; // Reuse variable
			if (isDef(i)) {
				if (i.create) { i.create(emptyNode, vnode); }
				if (i.insert) { insertedVnodeQueue.push(vnode); }
			}
		}

		function initComponent (vnode, insertedVnodeQueue) {
			if (vnode.data.pendingInsert) {
				insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert);
			}
			vnode.elm = vnode.child.$el;
			if (isPatchable(vnode)) {
				invokeCreateHooks(vnode, insertedVnodeQueue);
				setScope(vnode);
			} else {
				// empty component root.
				// skip all element-related modules except for ref (#3455)
				registerRef(vnode);
				// make sure to invoke the insert hook
				insertedVnodeQueue.push(vnode);
			}
		}

		// set scope id attribute for scoped CSS.
		// this is implemented as a special case to avoid the overhead
		// of going through the normal attribute patching process.
		function setScope (vnode) {
			var i;
			if (isDef(i = vnode.context) && isDef(i = i.$options._scopeId)) {
				nodeOps.setAttribute(vnode.elm, i, '');
			}
			if (isDef(i = activeInstance) &&
				i !== vnode.context &&
				isDef(i = i.$options._scopeId)) {
				nodeOps.setAttribute(vnode.elm, i, '');
			}
		}

		function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) {
			for (; startIdx <= endIdx; ++startIdx) {
				createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm);
			}
		}

		function invokeDestroyHook (vnode) {
			var i, j;
			var data = vnode.data;
			if (isDef(data)) {
				if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); }
				for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); }
			}
			if (isDef(i = vnode.children)) {
				for (j = 0; j < vnode.children.length; ++j) {
					invokeDestroyHook(vnode.children[j]);
				}
			}
		}

		function removeVnodes (parentElm, vnodes, startIdx, endIdx) {
			for (; startIdx <= endIdx; ++startIdx) {
				var ch = vnodes[startIdx];
				if (isDef(ch)) {
					if (isDef(ch.tag)) {
						removeAndInvokeRemoveHook(ch);
						invokeDestroyHook(ch);
					} else { // Text node
						removeNode(ch.elm);
					}
				}
			}
		}

		function removeAndInvokeRemoveHook (vnode, rm) {
			if (rm || isDef(vnode.data)) {
				var listeners = cbs.remove.length + 1;
				if (!rm) {
					// directly removing
					rm = createRmCb(vnode.elm, listeners);
				} else {
					// we have a recursively passed down rm callback
					// increase the listeners count
					rm.listeners += listeners;
				}
				// recursively invoke hooks on child component root node
				if (isDef(i = vnode.child) && isDef(i = i._vnode) && isDef(i.data)) {
					removeAndInvokeRemoveHook(i, rm);
				}
				for (i = 0; i < cbs.remove.length; ++i) {
					cbs.remove[i](vnode, rm);
				}
				if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) {
					i(vnode, rm);
				} else {
					rm();
				}
			} else {
				removeNode(vnode.elm);
			}
		}

		function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) {
			var oldStartIdx = 0;
			var newStartIdx = 0;
			var oldEndIdx = oldCh.length - 1;
			var oldStartVnode = oldCh[0];
			var oldEndVnode = oldCh[oldEndIdx];
			var newEndIdx = newCh.length - 1;
			var newStartVnode = newCh[0];
			var newEndVnode = newCh[newEndIdx];
			var oldKeyToIdx, idxInOld, elmToMove, refElm;

			// removeOnly is a special flag used only by <transition-group>
			// to ensure removed elements stay in correct relative positions
			// during leaving transitions
			var canMove = !removeOnly;

			while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) {
				if (isUndef(oldStartVnode)) {
					oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left
				} else if (isUndef(oldEndVnode)) {
					oldEndVnode = oldCh[--oldEndIdx];
				} else if (sameVnode(oldStartVnode, newStartVnode)) {
					patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue);
					oldStartVnode = oldCh[++oldStartIdx];
					newStartVnode = newCh[++newStartIdx];
				} else if (sameVnode(oldEndVnode, newEndVnode)) {
					patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue);
					oldEndVnode = oldCh[--oldEndIdx];
					newEndVnode = newCh[--newEndIdx];
				} else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right
					patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue);
					canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm));
					oldStartVnode = oldCh[++oldStartIdx];
					newEndVnode = newCh[--newEndIdx];
				} else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left
					patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue);
					canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm);
					oldEndVnode = oldCh[--oldEndIdx];
					newStartVnode = newCh[++newStartIdx];
				} else {
					if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); }
					idxInOld = isDef(newStartVnode.key) ? oldKeyToIdx[newStartVnode.key] : null;
					if (isUndef(idxInOld)) { // New element
						createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm);
						newStartVnode = newCh[++newStartIdx];
					} else {
						elmToMove = oldCh[idxInOld];
						/* istanbul ignore if */
						if ("development" !== 'production' && !elmToMove) {
							warn(
								'It seems there are duplicate keys that is causing an update error. ' +
								'Make sure each v-for item has a unique key.'
							);
						}
						if (sameVnode(elmToMove, newStartVnode)) {
							patchVnode(elmToMove, newStartVnode, insertedVnodeQueue);
							oldCh[idxInOld] = undefined;
							canMove && nodeOps.insertBefore(parentElm, newStartVnode.elm, oldStartVnode.elm);
							newStartVnode = newCh[++newStartIdx];
						} else {
							// same key but different element. treat as new element
							createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm);
							newStartVnode = newCh[++newStartIdx];
						}
					}
				}
			}
			if (oldStartIdx > oldEndIdx) {
				refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm;
				addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue);
			} else if (newStartIdx > newEndIdx) {
				removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx);
			}
		}

		function patchVnode (oldVnode, vnode, insertedVnodeQueue, removeOnly) {
			if (oldVnode === vnode) {
				return
			}
			// reuse element for static trees.
			// note we only do this if the vnode is cloned -
			// if the new node is not cloned it means the render functions have been
			// reset by the hot-reload-api and we need to do a proper re-render.
			if (vnode.isStatic &&
				oldVnode.isStatic &&
				vnode.key === oldVnode.key &&
				(vnode.isCloned || vnode.isOnce)) {
				vnode.elm = oldVnode.elm;
				vnode.child = oldVnode.child;
				return
			}
			var i;
			var data = vnode.data;
			var hasData = isDef(data);
			if (hasData && isDef(i = data.hook) && isDef(i = i.prepatch)) {
				i(oldVnode, vnode);
			}
			var elm = vnode.elm = oldVnode.elm;
			var oldCh = oldVnode.children;
			var ch = vnode.children;
			if (hasData && isPatchable(vnode)) {
				for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); }
				if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); }
			}
			if (isUndef(vnode.text)) {
				if (isDef(oldCh) && isDef(ch)) {
					if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); }
				} else if (isDef(ch)) {
					if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); }
					addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue);
				} else if (isDef(oldCh)) {
					removeVnodes(elm, oldCh, 0, oldCh.length - 1);
				} else if (isDef(oldVnode.text)) {
					nodeOps.setTextContent(elm, '');
				}
			} else if (oldVnode.text !== vnode.text) {
				nodeOps.setTextContent(elm, vnode.text);
			}
			if (hasData) {
				if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); }
			}
		}

		function invokeInsertHook (vnode, queue, initial) {
			// delay insert hooks for component root nodes, invoke them after the
			// element is really inserted
			if (initial && vnode.parent) {
				vnode.parent.data.pendingInsert = queue;
			} else {
				for (var i = 0; i < queue.length; ++i) {
					queue[i].data.hook.insert(queue[i]);
				}
			}
		}

		var bailed = false;
		// list of modules that can skip create hook during hydration because they
		// are already rendered on the client or has no need for initialization
		var isRenderedModule = makeMap('attrs,style,class,staticClass,staticStyle,key');

		// Note: this is a browser-only function so we can assume elms are DOM nodes.
		function hydrate (elm, vnode, insertedVnodeQueue) {
			{
				if (!assertNodeMatch(elm, vnode)) {
					return false
				}
			}
			vnode.elm = elm;
			var tag = vnode.tag;
			var data = vnode.data;
			var children = vnode.children;
			if (isDef(data)) {
				if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); }
				if (isDef(i = vnode.child)) {
					// child component. it should have hydrated its own tree.
					initComponent(vnode, insertedVnodeQueue);
					return true
				}
			}
			if (isDef(tag)) {
				if (isDef(children)) {
					// empty element, allow client to pick up and populate children
					if (!elm.hasChildNodes()) {
						createChildren(vnode, children, insertedVnodeQueue);
					} else {
						var childrenMatch = true;
						var childNode = elm.firstChild;
						for (var i$1 = 0; i$1 < children.length; i$1++) {
							if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue)) {
								childrenMatch = false;
								break
							}
							childNode = childNode.nextSibling;
						}
						// if childNode is not null, it means the actual childNodes list is
						// longer than the virtual children list.
						if (!childrenMatch || childNode) {
							if ("development" !== 'production' &&
								typeof console !== 'undefined' &&
								!bailed) {
								bailed = true;
								console.warn('Parent: ', elm);
								console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children);
							}
							return false
						}
					}
				}
				if (isDef(data)) {
					for (var key in data) {
						if (!isRenderedModule(key)) {
							invokeCreateHooks(vnode, insertedVnodeQueue);
							break
						}
					}
				}
			} else if (elm.data !== vnode.text) {
				elm.data = vnode.text;
			}
			return true
		}

		function assertNodeMatch (node, vnode) {
			if (vnode.tag) {
				return (
					vnode.tag.indexOf('vue-component') === 0 ||
					vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase())
				)
			} else {
				return node.nodeType === (vnode.isComment ? 8 : 3)
			}
		}

		return function patch (oldVnode, vnode, hydrating, removeOnly, parentElm, refElm) {
			if (!vnode) {
				if (oldVnode) { invokeDestroyHook(oldVnode); }
				return
			}

			var elm, parent;
			var isInitialPatch = false;
			var insertedVnodeQueue = [];

			if (!oldVnode) {
				// empty mount (likely as component), create new root element
				isInitialPatch = true;
				createElm(vnode, insertedVnodeQueue, parentElm, refElm);
			} else {
				var isRealElement = isDef(oldVnode.nodeType);
				if (!isRealElement && sameVnode(oldVnode, vnode)) {
					// patch existing root node
					patchVnode(oldVnode, vnode, insertedVnodeQueue, removeOnly);
				} else {
					if (isRealElement) {
						// mounting to a real element
						// check if this is server-rendered content and if we can perform
						// a successful hydration.
						if (oldVnode.nodeType === 1 && oldVnode.hasAttribute('server-rendered')) {
							oldVnode.removeAttribute('server-rendered');
							hydrating = true;
						}
						if (hydrating) {
							if (hydrate(oldVnode, vnode, insertedVnodeQueue)) {
								invokeInsertHook(vnode, insertedVnodeQueue, true);
								return oldVnode
							} else {
								warn(
									'The client-side rendered virtual DOM tree is not matching ' +
									'server-rendered content. This is likely caused by incorrect ' +
									'HTML markup, for example nesting block-level elements inside ' +
									'<p>, or missing <tbody>. Bailing hydration and performing ' +
									'full client-side render.'
								);
							}
						}
						// either not server-rendered, or hydration failed.
						// create an empty node and replace it
						oldVnode = emptyNodeAt(oldVnode);
					}
					// replacing existing element
					elm = oldVnode.elm;
					parent = nodeOps.parentNode(elm);
					createElm(vnode, insertedVnodeQueue, parent, nodeOps.nextSibling(elm));

					if (vnode.parent) {
						// component root element replaced.
						// update parent placeholder node element, recursively
						var ancestor = vnode.parent;
						while (ancestor) {
							ancestor.elm = vnode.elm;
							ancestor = ancestor.parent;
						}
						if (isPatchable(vnode)) {
							for (var i = 0; i < cbs.create.length; ++i) {
								cbs.create[i](emptyNode, vnode.parent);
							}
						}
					}

					if (parent !== null) {
						removeVnodes(parent, [oldVnode], 0, 0);
					} else if (isDef(oldVnode.tag)) {
						invokeDestroyHook(oldVnode);
					}
				}
			}

			invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch);
			return vnode.elm
		}
	}

	/*  */

	var directives = {
		create: updateDirectives,
		update: updateDirectives,
		destroy: function unbindDirectives (vnode) {
			updateDirectives(vnode, emptyNode);
		}
	};

	function updateDirectives (oldVnode, vnode) {
		if (oldVnode.data.directives || vnode.data.directives) {
			_update(oldVnode, vnode);
		}
	}

	function _update (oldVnode, vnode) {
		var isCreate = oldVnode === emptyNode;
		var isDestroy = vnode === emptyNode;
		var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context);
		var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context);

		var dirsWithInsert = [];
		var dirsWithPostpatch = [];

		var key, oldDir, dir;
		for (key in newDirs) {
			oldDir = oldDirs[key];
			dir = newDirs[key];
			if (!oldDir) {
				// new directive, bind
				callHook$1(dir, 'bind', vnode, oldVnode);
				if (dir.def && dir.def.inserted) {
					dirsWithInsert.push(dir);
				}
			} else {
				// existing directive, update
				dir.oldValue = oldDir.value;
				callHook$1(dir, 'update', vnode, oldVnode);
				if (dir.def && dir.def.componentUpdated) {
					dirsWithPostpatch.push(dir);
				}
			}
		}

		if (dirsWithInsert.length) {
			var callInsert = function () {
				for (var i = 0; i < dirsWithInsert.length; i++) {
					callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode);
				}
			};
			if (isCreate) {
				mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', callInsert, 'dir-insert');
			} else {
				callInsert();
			}
		}

		if (dirsWithPostpatch.length) {
			mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'postpatch', function () {
				for (var i = 0; i < dirsWithPostpatch.length; i++) {
					callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode);
				}
			}, 'dir-postpatch');
		}

		if (!isCreate) {
			for (key in oldDirs) {
				if (!newDirs[key]) {
					// no longer present, unbind
					callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy);
				}
			}
		}
	}

	var emptyModifiers = Object.create(null);

	function normalizeDirectives$1 (
		dirs,
		vm
	) {
		var res = Object.create(null);
		if (!dirs) {
			return res
		}
		var i, dir;
		for (i = 0; i < dirs.length; i++) {
			dir = dirs[i];
			if (!dir.modifiers) {
				dir.modifiers = emptyModifiers;
			}
			res[getRawDirName(dir)] = dir;
			dir.def = resolveAsset(vm.$options, 'directives', dir.name, true);
		}
		return res
	}

	function getRawDirName (dir) {
		return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.')))
	}

	function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) {
		var fn = dir.def && dir.def[hook];
		if (fn) {
			fn(vnode.elm, dir, vnode, oldVnode, isDestroy);
		}
	}

	var baseModules = [
		ref,
		directives
	];

	/*  */

	function updateAttrs (oldVnode, vnode) {
		if (!oldVnode.data.attrs && !vnode.data.attrs) {
			return
		}
		var key, cur, old;
		var elm = vnode.elm;
		var oldAttrs = oldVnode.data.attrs || {};
		var attrs = vnode.data.attrs || {};
		// clone observed objects, as the user probably wants to mutate it
		if (attrs.__ob__) {
			attrs = vnode.data.attrs = extend({}, attrs);
		}

		for (key in attrs) {
			cur = attrs[key];
			old = oldAttrs[key];
			if (old !== cur) {
				setAttr(elm, key, cur);
			}
		}
		// #4391: in IE9, setting type can reset value for input[type=radio]
		/* istanbul ignore if */
		if (isIE9 && attrs.value !== oldAttrs.value) {
			setAttr(elm, 'value', attrs.value);
		}
		for (key in oldAttrs) {
			if (attrs[key] == null) {
				if (isXlink(key)) {
					elm.removeAttributeNS(xlinkNS, getXlinkProp(key));
				} else if (!isEnumeratedAttr(key)) {
					elm.removeAttribute(key);
				}
			}
		}
	}

	function setAttr (el, key, value) {
		if (isBooleanAttr(key)) {
			// set attribute for blank value
			// e.g. <option disabled>Select one</option>
			if (isFalsyAttrValue(value)) {
				el.removeAttribute(key);
			} else {
				el.setAttribute(key, key);
			}
		} else if (isEnumeratedAttr(key)) {
			el.setAttribute(key, isFalsyAttrValue(value) || value === 'false' ? 'false' : 'true');
		} else if (isXlink(key)) {
			if (isFalsyAttrValue(value)) {
				el.removeAttributeNS(xlinkNS, getXlinkProp(key));
			} else {
				el.setAttributeNS(xlinkNS, key, value);
			}
		} else {
			if (isFalsyAttrValue(value)) {
				el.removeAttribute(key);
			} else {
				el.setAttribute(key, value);
			}
		}
	}

	var attrs = {
		create: updateAttrs,
		update: updateAttrs
	};

	/*  */

	function updateClass (oldVnode, vnode) {
		var el = vnode.elm;
		var data = vnode.data;
		var oldData = oldVnode.data;
		if (!data.staticClass && !data.class &&
			(!oldData || (!oldData.staticClass && !oldData.class))) {
			return
		}

		var cls = genClassForVnode(vnode);

		// handle transition classes
		var transitionClass = el._transitionClasses;
		if (transitionClass) {
			cls = concat(cls, stringifyClass(transitionClass));
		}

		// set the class
		if (cls !== el._prevClass) {
			el.setAttribute('class', cls);
			el._prevClass = cls;
		}
	}

	var klass = {
		create: updateClass,
		update: updateClass
	};

	/*  */

	var target$1;

	function add$2 (event, handler, once, capture) {
		if (once) {
			var oldHandler = handler;
			handler = function (ev) {
				remove$3(event, handler, capture);
				arguments.length === 1
					? oldHandler(ev)
					: oldHandler.apply(null, arguments);
			};
		}
		target$1.addEventListener(event, handler, capture);
	}

	function remove$3 (event, handler, capture) {
		target$1.removeEventListener(event, handler, capture);
	}

	function updateDOMListeners (oldVnode, vnode) {
		if (!oldVnode.data.on && !vnode.data.on) {
			return
		}
		var on = vnode.data.on || {};
		var oldOn = oldVnode.data.on || {};
		target$1 = vnode.elm;
		updateListeners(on, oldOn, add$2, remove$3, vnode.context);
	}

	var events = {
		create: updateDOMListeners,
		update: updateDOMListeners
	};

	/*  */

	function updateDOMProps (oldVnode, vnode) {
		if (!oldVnode.data.domProps && !vnode.data.domProps) {
			return
		}
		var key, cur;
		var elm = vnode.elm;
		var oldProps = oldVnode.data.domProps || {};
		var props = vnode.data.domProps || {};
		// clone observed objects, as the user probably wants to mutate it
		if (props.__ob__) {
			props = vnode.data.domProps = extend({}, props);
		}

		for (key in oldProps) {
			if (props[key] == null) {
				elm[key] = '';
			}
		}
		for (key in props) {
			cur = props[key];
			// ignore children if the node has textContent or innerHTML,
			// as these will throw away existing DOM nodes and cause removal errors
			// on subsequent patches (#3360)
			if (key === 'textContent' || key === 'innerHTML') {
				if (vnode.children) { vnode.children.length = 0; }
				if (cur === oldProps[key]) { continue }
			}
			// #4521: if a click event triggers update before the change event is
			// dispatched on a checkbox/radio input, the input's checked state will
			// be reset and fail to trigger another update.
			/* istanbul ignore next */
			if (key === 'checked' && !isDirty(elm, cur)) {
				continue
			}
			if (key === 'value') {
				// store value as _value as well since
				// non-string values will be stringified
				elm._value = cur;
				// avoid resetting cursor position when value is the same
				var strCur = cur == null ? '' : String(cur);
				if (shouldUpdateValue(elm, vnode, strCur)) {
					elm.value = strCur;
				}
			} else {
				elm[key] = cur;
			}
		}
	}

// check platforms/web/util/attrs.js acceptValue


	function shouldUpdateValue (
		elm,
		vnode,
		checkVal
	) {
		if (!elm.composing && (
				vnode.tag === 'option' ||
				isDirty(elm, checkVal) ||
				isInputChanged(vnode, checkVal)
			)) {
			return true
		}
		return false
	}

	function isDirty (elm, checkVal) {
		return document.activeElement !== elm && elm.value !== checkVal
	}

	function isInputChanged (vnode, newVal) {
		var value = vnode.elm.value;
		var modifiers = vnode.elm._vModifiers; // injected by v-model runtime
		if ((modifiers && modifiers.number) || vnode.elm.type === 'number') {
			return toNumber(value) !== toNumber(newVal)
		}
		if (modifiers && modifiers.trim) {
			return value.trim() !== newVal.trim()
		}
		return value !== newVal
	}

	var domProps = {
		create: updateDOMProps,
		update: updateDOMProps
	};

	/*  */

	var parseStyleText = cached(function (cssText) {
		var res = {};
		var listDelimiter = /;(?![^(]*\))/g;
		var propertyDelimiter = /:(.+)/;
		cssText.split(listDelimiter).forEach(function (item) {
			if (item) {
				var tmp = item.split(propertyDelimiter);
				tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim());
			}
		});
		return res
	});

// merge static and dynamic style data on the same vnode
	function normalizeStyleData (data) {
		var style = normalizeStyleBinding(data.style);
		// static style is pre-processed into an object during compilation
		// and is always a fresh object, so it's safe to merge into it
		return data.staticStyle
			? extend(data.staticStyle, style)
			: style
	}

// normalize possible array / string values into Object
	function normalizeStyleBinding (bindingStyle) {
		if (Array.isArray(bindingStyle)) {
			return toObject(bindingStyle)
		}
		if (typeof bindingStyle === 'string') {
			return parseStyleText(bindingStyle)
		}
		return bindingStyle
	}

	/**
	 * parent component style should be after child's
	 * so that parent component's style could override it
	 */
	function getStyle (vnode, checkChild) {
		var res = {};
		var styleData;

		if (checkChild) {
			var childNode = vnode;
			while (childNode.child) {
				childNode = childNode.child._vnode;
				if (childNode.data && (styleData = normalizeStyleData(childNode.data))) {
					extend(res, styleData);
				}
			}
		}

		if ((styleData = normalizeStyleData(vnode.data))) {
			extend(res, styleData);
		}

		var parentNode = vnode;
		while ((parentNode = parentNode.parent)) {
			if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) {
				extend(res, styleData);
			}
		}
		return res
	}

	/*  */

	var cssVarRE = /^--/;
	var importantRE = /\s*!important$/;
	var setProp = function (el, name, val) {
		/* istanbul ignore if */
		if (cssVarRE.test(name)) {
			el.style.setProperty(name, val);
		} else if (importantRE.test(val)) {
			el.style.setProperty(name, val.replace(importantRE, ''), 'important');
		} else {
			el.style[normalize(name)] = val;
		}
	};

	var prefixes = ['Webkit', 'Moz', 'ms'];

	var testEl;
	var normalize = cached(function (prop) {
		testEl = testEl || document.createElement('div');
		prop = camelize(prop);
		if (prop !== 'filter' && (prop in testEl.style)) {
			return prop
		}
		var upper = prop.charAt(0).toUpperCase() + prop.slice(1);
		for (var i = 0; i < prefixes.length; i++) {
			var prefixed = prefixes[i] + upper;
			if (prefixed in testEl.style) {
				return prefixed
			}
		}
	});

	function updateStyle (oldVnode, vnode) {
		var data = vnode.data;
		var oldData = oldVnode.data;

		if (!data.staticStyle && !data.style &&
			!oldData.staticStyle && !oldData.style) {
			return
		}

		var cur, name;
		var el = vnode.elm;
		var oldStaticStyle = oldVnode.data.staticStyle;
		var oldStyleBinding = oldVnode.data.style || {};

		// if static style exists, stylebinding already merged into it when doing normalizeStyleData
		var oldStyle = oldStaticStyle || oldStyleBinding;

		var style = normalizeStyleBinding(vnode.data.style) || {};

		vnode.data.style = style.__ob__ ? extend({}, style) : style;

		var newStyle = getStyle(vnode, true);

		for (name in oldStyle) {
			if (newStyle[name] == null) {
				setProp(el, name, '');
			}
		}
		for (name in newStyle) {
			cur = newStyle[name];
			if (cur !== oldStyle[name]) {
				// ie9 setting to null has no effect, must use empty string
				setProp(el, name, cur == null ? '' : cur);
			}
		}
	}

	var style = {
		create: updateStyle,
		update: updateStyle
	};

	/*  */

	/**
	 * Add class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function addClass (el, cls) {
		/* istanbul ignore if */
		if (!cls || !cls.trim()) {
			return
		}

		/* istanbul ignore else */
		if (el.classList) {
			if (cls.indexOf(' ') > -1) {
				cls.split(/\s+/).forEach(function (c) { return el.classList.add(c); });
			} else {
				el.classList.add(cls);
			}
		} else {
			var cur = ' ' + el.getAttribute('class') + ' ';
			if (cur.indexOf(' ' + cls + ' ') < 0) {
				el.setAttribute('class', (cur + cls).trim());
			}
		}
	}

	/**
	 * Remove class with compatibility for SVG since classList is not supported on
	 * SVG elements in IE
	 */
	function removeClass (el, cls) {
		/* istanbul ignore if */
		if (!cls || !cls.trim()) {
			return
		}

		/* istanbul ignore else */
		if (el.classList) {
			if (cls.indexOf(' ') > -1) {
				cls.split(/\s+/).forEach(function (c) { return el.classList.remove(c); });
			} else {
				el.classList.remove(cls);
			}
		} else {
			var cur = ' ' + el.getAttribute('class') + ' ';
			var tar = ' ' + cls + ' ';
			while (cur.indexOf(tar) >= 0) {
				cur = cur.replace(tar, ' ');
			}
			el.setAttribute('class', cur.trim());
		}
	}

	/*  */

	var hasTransition = inBrowser && !isIE9;
	var TRANSITION = 'transition';
	var ANIMATION = 'animation';

// Transition property/event sniffing
	var transitionProp = 'transition';
	var transitionEndEvent = 'transitionend';
	var animationProp = 'animation';
	var animationEndEvent = 'animationend';
	if (hasTransition) {
		/* istanbul ignore if */
		if (window.ontransitionend === undefined &&
			window.onwebkittransitionend !== undefined) {
			transitionProp = 'WebkitTransition';
			transitionEndEvent = 'webkitTransitionEnd';
		}
		if (window.onanimationend === undefined &&
			window.onwebkitanimationend !== undefined) {
			animationProp = 'WebkitAnimation';
			animationEndEvent = 'webkitAnimationEnd';
		}
	}

	var raf = (inBrowser && window.requestAnimationFrame) || setTimeout;
	function nextFrame (fn) {
		raf(function () {
			raf(fn);
		});
	}

	function addTransitionClass (el, cls) {
		(el._transitionClasses || (el._transitionClasses = [])).push(cls);
		addClass(el, cls);
	}

	function removeTransitionClass (el, cls) {
		if (el._transitionClasses) {
			remove$1(el._transitionClasses, cls);
		}
		removeClass(el, cls);
	}

	function whenTransitionEnds (
		el,
		expectedType,
		cb
	) {
		var ref = getTransitionInfo(el, expectedType);
		var type = ref.type;
		var timeout = ref.timeout;
		var propCount = ref.propCount;
		if (!type) { return cb() }
		var event = type === TRANSITION ? transitionEndEvent : animationEndEvent;
		var ended = 0;
		var end = function () {
			el.removeEventListener(event, onEnd);
			cb();
		};
		var onEnd = function (e) {
			if (e.target === el) {
				if (++ended >= propCount) {
					end();
				}
			}
		};
		setTimeout(function () {
			if (ended < propCount) {
				end();
			}
		}, timeout + 1);
		el.addEventListener(event, onEnd);
	}

	var transformRE = /\b(transform|all)(,|$)/;

	function getTransitionInfo (el, expectedType) {
		var styles = window.getComputedStyle(el);
		var transitioneDelays = styles[transitionProp + 'Delay'].split(', ');
		var transitionDurations = styles[transitionProp + 'Duration'].split(', ');
		var transitionTimeout = getTimeout(transitioneDelays, transitionDurations);
		var animationDelays = styles[animationProp + 'Delay'].split(', ');
		var animationDurations = styles[animationProp + 'Duration'].split(', ');
		var animationTimeout = getTimeout(animationDelays, animationDurations);

		var type;
		var timeout = 0;
		var propCount = 0;
		/* istanbul ignore if */
		if (expectedType === TRANSITION) {
			if (transitionTimeout > 0) {
				type = TRANSITION;
				timeout = transitionTimeout;
				propCount = transitionDurations.length;
			}
		} else if (expectedType === ANIMATION) {
			if (animationTimeout > 0) {
				type = ANIMATION;
				timeout = animationTimeout;
				propCount = animationDurations.length;
			}
		} else {
			timeout = Math.max(transitionTimeout, animationTimeout);
			type = timeout > 0
				? transitionTimeout > animationTimeout
				? TRANSITION
				: ANIMATION
				: null;
			propCount = type
				? type === TRANSITION
				? transitionDurations.length
				: animationDurations.length
				: 0;
		}
		var hasTransform =
			type === TRANSITION &&
			transformRE.test(styles[transitionProp + 'Property']);
		return {
			type: type,
			timeout: timeout,
			propCount: propCount,
			hasTransform: hasTransform
		}
	}

	function getTimeout (delays, durations) {
		/* istanbul ignore next */
		while (delays.length < durations.length) {
			delays = delays.concat(delays);
		}

		return Math.max.apply(null, durations.map(function (d, i) {
			return toMs(d) + toMs(delays[i])
		}))
	}

	function toMs (s) {
		return Number(s.slice(0, -1)) * 1000
	}

	/*  */

	function enter (vnode, toggleDisplay) {
		var el = vnode.elm;

		// call leave callback now
		if (el._leaveCb) {
			el._leaveCb.cancelled = true;
			el._leaveCb();
		}

		var data = resolveTransition(vnode.data.transition);
		if (!data) {
			return
		}

		/* istanbul ignore if */
		if (el._enterCb || el.nodeType !== 1) {
			return
		}

		var css = data.css;
		var type = data.type;
		var enterClass = data.enterClass;
		var enterToClass = data.enterToClass;
		var enterActiveClass = data.enterActiveClass;
		var appearClass = data.appearClass;
		var appearToClass = data.appearToClass;
		var appearActiveClass = data.appearActiveClass;
		var beforeEnter = data.beforeEnter;
		var enter = data.enter;
		var afterEnter = data.afterEnter;
		var enterCancelled = data.enterCancelled;
		var beforeAppear = data.beforeAppear;
		var appear = data.appear;
		var afterAppear = data.afterAppear;
		var appearCancelled = data.appearCancelled;

		// activeInstance will always be the <transition> component managing this
		// transition. One edge case to check is when the <transition> is placed
		// as the root node of a child component. In that case we need to check
		// <transition>'s parent for appear check.
		var context = activeInstance;
		var transitionNode = activeInstance.$vnode;
		while (transitionNode && transitionNode.parent) {
			transitionNode = transitionNode.parent;
			context = transitionNode.context;
		}

		var isAppear = !context._isMounted || !vnode.isRootInsert;

		if (isAppear && !appear && appear !== '') {
			return
		}

		var startClass = isAppear ? appearClass : enterClass;
		var activeClass = isAppear ? appearActiveClass : enterActiveClass;
		var toClass = isAppear ? appearToClass : enterToClass;
		var beforeEnterHook = isAppear ? (beforeAppear || beforeEnter) : beforeEnter;
		var enterHook = isAppear ? (typeof appear === 'function' ? appear : enter) : enter;
		var afterEnterHook = isAppear ? (afterAppear || afterEnter) : afterEnter;
		var enterCancelledHook = isAppear ? (appearCancelled || enterCancelled) : enterCancelled;

		var expectsCSS = css !== false && !isIE9;
		var userWantsControl =
			enterHook &&
				// enterHook may be a bound method which exposes
				// the length of original fn as _length
			(enterHook._length || enterHook.length) > 1;

		var cb = el._enterCb = once(function () {
			if (expectsCSS) {
				removeTransitionClass(el, toClass);
				removeTransitionClass(el, activeClass);
			}
			if (cb.cancelled) {
				if (expectsCSS) {
					removeTransitionClass(el, startClass);
				}
				enterCancelledHook && enterCancelledHook(el);
			} else {
				afterEnterHook && afterEnterHook(el);
			}
			el._enterCb = null;
		});

		if (!vnode.data.show) {
			// remove pending leave element on enter by injecting an insert hook
			mergeVNodeHook(vnode.data.hook || (vnode.data.hook = {}), 'insert', function () {
				var parent = el.parentNode;
				var pendingNode = parent && parent._pending && parent._pending[vnode.key];
				if (pendingNode &&
					pendingNode.context === vnode.context &&
					pendingNode.tag === vnode.tag &&
					pendingNode.elm._leaveCb) {
					pendingNode.elm._leaveCb();
				}
				enterHook && enterHook(el, cb);
			}, 'transition-insert');
		}

		// start enter transition
		beforeEnterHook && beforeEnterHook(el);
		if (expectsCSS) {
			addTransitionClass(el, startClass);
			addTransitionClass(el, activeClass);
			nextFrame(function () {
				addTransitionClass(el, toClass);
				removeTransitionClass(el, startClass);
				if (!cb.cancelled && !userWantsControl) {
					whenTransitionEnds(el, type, cb);
				}
			});
		}

		if (vnode.data.show) {
			toggleDisplay && toggleDisplay();
			enterHook && enterHook(el, cb);
		}

		if (!expectsCSS && !userWantsControl) {
			cb();
		}
	}

	function leave (vnode, rm) {
		var el = vnode.elm;

		// call enter callback now
		if (el._enterCb) {
			el._enterCb.cancelled = true;
			el._enterCb();
		}

		var data = resolveTransition(vnode.data.transition);
		if (!data) {
			return rm()
		}

		/* istanbul ignore if */
		if (el._leaveCb || el.nodeType !== 1) {
			return
		}

		var css = data.css;
		var type = data.type;
		var leaveClass = data.leaveClass;
		var leaveToClass = data.leaveToClass;
		var leaveActiveClass = data.leaveActiveClass;
		var beforeLeave = data.beforeLeave;
		var leave = data.leave;
		var afterLeave = data.afterLeave;
		var leaveCancelled = data.leaveCancelled;
		var delayLeave = data.delayLeave;

		var expectsCSS = css !== false && !isIE9;
		var userWantsControl =
			leave &&
				// leave hook may be a bound method which exposes
				// the length of original fn as _length
			(leave._length || leave.length) > 1;

		var cb = el._leaveCb = once(function () {
			if (el.parentNode && el.parentNode._pending) {
				el.parentNode._pending[vnode.key] = null;
			}
			if (expectsCSS) {
				removeTransitionClass(el, leaveToClass);
				removeTransitionClass(el, leaveActiveClass);
			}
			if (cb.cancelled) {
				if (expectsCSS) {
					removeTransitionClass(el, leaveClass);
				}
				leaveCancelled && leaveCancelled(el);
			} else {
				rm();
				afterLeave && afterLeave(el);
			}
			el._leaveCb = null;
		});

		if (delayLeave) {
			delayLeave(performLeave);
		} else {
			performLeave();
		}

		function performLeave () {
			// the delayed leave may have already been cancelled
			if (cb.cancelled) {
				return
			}
			// record leaving element
			if (!vnode.data.show) {
				(el.parentNode._pending || (el.parentNode._pending = {}))[vnode.key] = vnode;
			}
			beforeLeave && beforeLeave(el);
			if (expectsCSS) {
				addTransitionClass(el, leaveClass);
				addTransitionClass(el, leaveActiveClass);
				nextFrame(function () {
					addTransitionClass(el, leaveToClass);
					removeTransitionClass(el, leaveClass);
					if (!cb.cancelled && !userWantsControl) {
						whenTransitionEnds(el, type, cb);
					}
				});
			}
			leave && leave(el, cb);
			if (!expectsCSS && !userWantsControl) {
				cb();
			}
		}
	}

	function resolveTransition (def$$1) {
		if (!def$$1) {
			return
		}
		/* istanbul ignore else */
		if (typeof def$$1 === 'object') {
			var res = {};
			if (def$$1.css !== false) {
				extend(res, autoCssTransition(def$$1.name || 'v'));
			}
			extend(res, def$$1);
			return res
		} else if (typeof def$$1 === 'string') {
			return autoCssTransition(def$$1)
		}
	}

	var autoCssTransition = cached(function (name) {
		return {
			enterClass: (name + "-enter"),
			leaveClass: (name + "-leave"),
			appearClass: (name + "-enter"),
			enterToClass: (name + "-enter-to"),
			leaveToClass: (name + "-leave-to"),
			appearToClass: (name + "-enter-to"),
			enterActiveClass: (name + "-enter-active"),
			leaveActiveClass: (name + "-leave-active"),
			appearActiveClass: (name + "-enter-active")
		}
	});

	function once (fn) {
		var called = false;
		return function () {
			if (!called) {
				called = true;
				fn();
			}
		}
	}

	function _enter (_, vnode) {
		if (!vnode.data.show) {
			enter(vnode);
		}
	}

	var transition = inBrowser ? {
		create: _enter,
		activate: _enter,
		remove: function remove (vnode, rm) {
			/* istanbul ignore else */
			if (!vnode.data.show) {
				leave(vnode, rm);
			} else {
				rm();
			}
		}
	} : {};

	var platformModules = [
		attrs,
		klass,
		events,
		domProps,
		style,
		transition
	];

	/*  */

// the directive module should be applied last, after all
// built-in modules have been applied.
	var modules = platformModules.concat(baseModules);

	var patch$1 = createPatchFunction({ nodeOps: nodeOps, modules: modules });

	/**
	 * Not type checking this file because flow doesn't like attaching
	 * properties to Elements.
	 */

	var modelableTagRE = /^input|select|textarea|vue-component-[0-9]+(-[0-9a-zA-Z_-]*)?$/;

	/* istanbul ignore if */
	if (isIE9) {
		// http://www.matts411.com/post/internet-explorer-9-oninput/
		document.addEventListener('selectionchange', function () {
			var el = document.activeElement;
			if (el && el.vmodel) {
				trigger(el, 'input');
			}
		});
	}

	var model = {
		inserted: function inserted (el, binding, vnode) {
			{
				if (!modelableTagRE.test(vnode.tag)) {
					warn(
						"v-model is not supported on element type: <" + (vnode.tag) + ">. " +
						'If you are working with contenteditable, it\'s recommended to ' +
						'wrap a library dedicated for that purpose inside a custom component.',
						vnode.context
					);
				}
			}
			if (vnode.tag === 'select') {
				var cb = function () {
					setSelected(el, binding, vnode.context);
				};
				cb();
				/* istanbul ignore if */
				if (isIE || isEdge) {
					setTimeout(cb, 0);
				}
			} else if (vnode.tag === 'textarea' || el.type === 'text') {
				el._vModifiers = binding.modifiers;
				if (!binding.modifiers.lazy) {
					if (!isAndroid) {
						el.addEventListener('compositionstart', onCompositionStart);
						el.addEventListener('compositionend', onCompositionEnd);
					}
					/* istanbul ignore if */
					if (isIE9) {
						el.vmodel = true;
					}
				}
			}
		},
		componentUpdated: function componentUpdated (el, binding, vnode) {
			if (vnode.tag === 'select') {
				setSelected(el, binding, vnode.context);
				// in case the options rendered by v-for have changed,
				// it's possible that the value is out-of-sync with the rendered options.
				// detect such cases and filter out values that no longer has a matching
				// option in the DOM.
				var needReset = el.multiple
					? binding.value.some(function (v) { return hasNoMatchingOption(v, el.options); })
					: binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, el.options);
				if (needReset) {
					trigger(el, 'change');
				}
			}
		}
	};

	function setSelected (el, binding, vm) {
		var value = binding.value;
		var isMultiple = el.multiple;
		if (isMultiple && !Array.isArray(value)) {
			"development" !== 'production' && warn(
				"<select multiple v-model=\"" + (binding.expression) + "\"> " +
				"expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)),
				vm
			);
			return
		}
		var selected, option;
		for (var i = 0, l = el.options.length; i < l; i++) {
			option = el.options[i];
			if (isMultiple) {
				selected = looseIndexOf(value, getValue(option)) > -1;
				if (option.selected !== selected) {
					option.selected = selected;
				}
			} else {
				if (looseEqual(getValue(option), value)) {
					if (el.selectedIndex !== i) {
						el.selectedIndex = i;
					}
					return
				}
			}
		}
		if (!isMultiple) {
			el.selectedIndex = -1;
		}
	}

	function hasNoMatchingOption (value, options) {
		for (var i = 0, l = options.length; i < l; i++) {
			if (looseEqual(getValue(options[i]), value)) {
				return false
			}
		}
		return true
	}

	function getValue (option) {
		return '_value' in option
			? option._value
			: option.value
	}

	function onCompositionStart (e) {
		e.target.composing = true;
	}

	function onCompositionEnd (e) {
		e.target.composing = false;
		trigger(e.target, 'input');
	}

	function trigger (el, type) {
		var e = document.createEvent('HTMLEvents');
		e.initEvent(type, true, true);
		el.dispatchEvent(e);
	}

	/*  */

// recursively search for possible transition defined inside the component root
	function locateNode (vnode) {
		return vnode.child && (!vnode.data || !vnode.data.transition)
			? locateNode(vnode.child._vnode)
			: vnode
	}

	var show = {
		bind: function bind (el, ref, vnode) {
			var value = ref.value;

			vnode = locateNode(vnode);
			var transition = vnode.data && vnode.data.transition;
			var originalDisplay = el.__vOriginalDisplay =
				el.style.display === 'none' ? '' : el.style.display;
			if (value && transition && !isIE9) {
				vnode.data.show = true;
				enter(vnode, function () {
					el.style.display = originalDisplay;
				});
			} else {
				el.style.display = value ? originalDisplay : 'none';
			}
		},

		update: function update (el, ref, vnode) {
			var value = ref.value;
			var oldValue = ref.oldValue;

			/* istanbul ignore if */
			if (value === oldValue) { return }
			vnode = locateNode(vnode);
			var transition = vnode.data && vnode.data.transition;
			if (transition && !isIE9) {
				vnode.data.show = true;
				if (value) {
					enter(vnode, function () {
						el.style.display = el.__vOriginalDisplay;
					});
				} else {
					leave(vnode, function () {
						el.style.display = 'none';
					});
				}
			} else {
				el.style.display = value ? el.__vOriginalDisplay : 'none';
			}
		},

		unbind: function unbind (
			el,
			binding,
			vnode,
			oldVnode,
			isDestroy
		) {
			if (!isDestroy) {
				el.style.display = el.__vOriginalDisplay;
			}
		}
	};

	var platformDirectives = {
		model: model,
		show: show
	};

	/*  */

// Provides transition support for a single element/component.
// supports transition mode (out-in / in-out)

	var transitionProps = {
		name: String,
		appear: Boolean,
		css: Boolean,
		mode: String,
		type: String,
		enterClass: String,
		leaveClass: String,
		enterToClass: String,
		leaveToClass: String,
		enterActiveClass: String,
		leaveActiveClass: String,
		appearClass: String,
		appearActiveClass: String,
		appearToClass: String
	};

// in case the child is also an abstract component, e.g. <keep-alive>
// we want to recursively retrieve the real component to be rendered
	function getRealChild (vnode) {
		var compOptions = vnode && vnode.componentOptions;
		if (compOptions && compOptions.Ctor.options.abstract) {
			return getRealChild(getFirstComponentChild(compOptions.children))
		} else {
			return vnode
		}
	}

	function extractTransitionData (comp) {
		var data = {};
		var options = comp.$options;
		// props
		for (var key in options.propsData) {
			data[key] = comp[key];
		}
		// events.
		// extract listeners and pass them directly to the transition methods
		var listeners = options._parentListeners;
		for (var key$1 in listeners) {
			data[camelize(key$1)] = listeners[key$1].fn;
		}
		return data
	}

	function placeholder (h, rawChild) {
		return /\d-keep-alive$/.test(rawChild.tag)
			? h('keep-alive')
			: null
	}

	function hasParentTransition (vnode) {
		while ((vnode = vnode.parent)) {
			if (vnode.data.transition) {
				return true
			}
		}
	}

	function isSameChild (child, oldChild) {
		return oldChild.key === child.key && oldChild.tag === child.tag
	}

	var Transition = {
		name: 'transition',
		props: transitionProps,
		abstract: true,
		render: function render (h) {
			var this$1 = this;

			var children = this.$slots.default;
			if (!children) {
				return
			}

			// filter out text nodes (possible whitespaces)
			children = children.filter(function (c) { return c.tag; });
			/* istanbul ignore if */
			if (!children.length) {
				return
			}

			// warn multiple elements
			if ("development" !== 'production' && children.length > 1) {
				warn(
					'<transition> can only be used on a single element. Use ' +
					'<transition-group> for lists.',
					this.$parent
				);
			}

			var mode = this.mode;

			// warn invalid mode
			if ("development" !== 'production' &&
				mode && mode !== 'in-out' && mode !== 'out-in') {
				warn(
					'invalid <transition> mode: ' + mode,
					this.$parent
				);
			}

			var rawChild = children[0];

			// if this is a component root node and the component's
			// parent container node also has transition, skip.
			if (hasParentTransition(this.$vnode)) {
				return rawChild
			}

			// apply transition data to child
			// use getRealChild() to ignore abstract components e.g. keep-alive
			var child = getRealChild(rawChild);
			/* istanbul ignore if */
			if (!child) {
				return rawChild
			}

			if (this._leaving) {
				return placeholder(h, rawChild)
			}

			var key = child.key = child.key == null || child.isStatic
				? ("__v" + (child.tag + this._uid) + "__")
				: child.key;
			var data = (child.data || (child.data = {})).transition = extractTransitionData(this);
			var oldRawChild = this._vnode;
			var oldChild = getRealChild(oldRawChild);

			// mark v-show
			// so that the transition module can hand over the control to the directive
			if (child.data.directives && child.data.directives.some(function (d) { return d.name === 'show'; })) {
				child.data.show = true;
			}

			if (oldChild && oldChild.data && !isSameChild(child, oldChild)) {
				// replace old child transition data with fresh one
				// important for dynamic transitions!
				var oldData = oldChild && (oldChild.data.transition = extend({}, data));
				// handle transition mode
				if (mode === 'out-in') {
					// return placeholder node and queue update when leave finishes
					this._leaving = true;
					mergeVNodeHook(oldData, 'afterLeave', function () {
						this$1._leaving = false;
						this$1.$forceUpdate();
					}, key);
					return placeholder(h, rawChild)
				} else if (mode === 'in-out') {
					var delayedLeave;
					var performLeave = function () { delayedLeave(); };
					mergeVNodeHook(data, 'afterEnter', performLeave, key);
					mergeVNodeHook(data, 'enterCancelled', performLeave, key);
					mergeVNodeHook(oldData, 'delayLeave', function (leave) {
						delayedLeave = leave;
					}, key);
				}
			}

			return rawChild
		}
	};

	/*  */

// Provides transition support for list items.
// supports move transitions using the FLIP technique.

// Because the vdom's children update algorithm is "unstable" - i.e.
// it doesn't guarantee the relative positioning of removed elements,
// we force transition-group to update its children into two passes:
// in the first pass, we remove all nodes that need to be removed,
// triggering their leaving transition; in the second pass, we insert/move
// into the final disired state. This way in the second pass removed
// nodes will remain where they should be.

	var props = extend({
		tag: String,
		moveClass: String
	}, transitionProps);

	delete props.mode;

	var TransitionGroup = {
		props: props,

		render: function render (h) {
			var tag = this.tag || this.$vnode.data.tag || 'span';
			var map = Object.create(null);
			var prevChildren = this.prevChildren = this.children;
			var rawChildren = this.$slots.default || [];
			var children = this.children = [];
			var transitionData = extractTransitionData(this);

			for (var i = 0; i < rawChildren.length; i++) {
				var c = rawChildren[i];
				if (c.tag) {
					if (c.key != null && String(c.key).indexOf('__vlist') !== 0) {
						children.push(c);
						map[c.key] = c
						;(c.data || (c.data = {})).transition = transitionData;
					} else {
						var opts = c.componentOptions;
						var name = opts
							? (opts.Ctor.options.name || opts.tag)
							: c.tag;
						warn(("<transition-group> children must be keyed: <" + name + ">"));
					}
				}
			}

			if (prevChildren) {
				var kept = [];
				var removed = [];
				for (var i$1 = 0; i$1 < prevChildren.length; i$1++) {
					var c$1 = prevChildren[i$1];
					c$1.data.transition = transitionData;
					c$1.data.pos = c$1.elm.getBoundingClientRect();
					if (map[c$1.key]) {
						kept.push(c$1);
					} else {
						removed.push(c$1);
					}
				}
				this.kept = h(tag, null, kept);
				this.removed = removed;
			}

			return h(tag, null, children)
		},

		beforeUpdate: function beforeUpdate () {
			// force removing pass
			this.__patch__(
				this._vnode,
				this.kept,
				false, // hydrating
				true // removeOnly (!important, avoids unnecessary moves)
			);
			this._vnode = this.kept;
		},

		updated: function updated () {
			var children = this.prevChildren;
			var moveClass = this.moveClass || ((this.name || 'v') + '-move');
			if (!children.length || !this.hasMove(children[0].elm, moveClass)) {
				return
			}

			// we divide the work into three loops to avoid mixing DOM reads and writes
			// in each iteration - which helps prevent layout thrashing.
			children.forEach(callPendingCbs);
			children.forEach(recordPosition);
			children.forEach(applyTranslation);

			// force reflow to put everything in position
			var f = document.body.offsetHeight; // eslint-disable-line

			children.forEach(function (c) {
				if (c.data.moved) {
					var el = c.elm;
					var s = el.style;
					addTransitionClass(el, moveClass);
					s.transform = s.WebkitTransform = s.transitionDuration = '';
					el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) {
						if (!e || /transform$/.test(e.propertyName)) {
							el.removeEventListener(transitionEndEvent, cb);
							el._moveCb = null;
							removeTransitionClass(el, moveClass);
						}
					});
				}
			});
		},

		methods: {
			hasMove: function hasMove (el, moveClass) {
				/* istanbul ignore if */
				if (!hasTransition) {
					return false
				}
				if (this._hasMove != null) {
					return this._hasMove
				}
				addTransitionClass(el, moveClass);
				var info = getTransitionInfo(el);
				removeTransitionClass(el, moveClass);
				return (this._hasMove = info.hasTransform)
			}
		}
	};

	function callPendingCbs (c) {
		/* istanbul ignore if */
		if (c.elm._moveCb) {
			c.elm._moveCb();
		}
		/* istanbul ignore if */
		if (c.elm._enterCb) {
			c.elm._enterCb();
		}
	}

	function recordPosition (c) {
		c.data.newPos = c.elm.getBoundingClientRect();
	}

	function applyTranslation (c) {
		var oldPos = c.data.pos;
		var newPos = c.data.newPos;
		var dx = oldPos.left - newPos.left;
		var dy = oldPos.top - newPos.top;
		if (dx || dy) {
			c.data.moved = true;
			var s = c.elm.style;
			s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)";
			s.transitionDuration = '0s';
		}
	}

	var platformComponents = {
		Transition: Transition,
		TransitionGroup: TransitionGroup
	};

	/*  */

// install platform specific utils
	Vue$3.config.isUnknownElement = isUnknownElement;
	Vue$3.config.isReservedTag = isReservedTag;
	Vue$3.config.getTagNamespace = getTagNamespace;
	Vue$3.config.mustUseProp = mustUseProp;

// install platform runtime directives & components
	extend(Vue$3.options.directives, platformDirectives);
	extend(Vue$3.options.components, platformComponents);

// install platform patch function
	Vue$3.prototype.__patch__ = inBrowser ? patch$1 : noop;

// wrap mount
	Vue$3.prototype.$mount = function (
		el,
		hydrating
	) {
		el = el && inBrowser ? query(el) : undefined;
		return this._mount(el, hydrating)
	};

	if ("development" !== 'production' &&
		inBrowser && typeof console !== 'undefined') {
		console[console.info ? 'info' : 'log'](
			"You are running Vue in development mode.\n" +
			"Make sure to turn on production mode when deploying for production.\n" +
			"See more tips at https://vuejs.org/guide/deployment.html"
		);
	}

// devtools global hook
	/* istanbul ignore next */
	setTimeout(function () {
		if (config.devtools) {
			if (devtools) {
				devtools.emit('init', Vue$3);
			} else if (
				"development" !== 'production' &&
				inBrowser && !isEdge && /Chrome\/\d+/.test(window.navigator.userAgent)
			) {
				console[console.info ? 'info' : 'log'](
					'Download the Vue Devtools extension for a better development experience:\n' +
					'https://github.com/vuejs/vue-devtools'
				);
			}
		}
	}, 0);

	/*  */

// check whether current browser encodes a char inside attribute values
	function shouldDecode (content, encoded) {
		var div = document.createElement('div');
		div.innerHTML = "<div a=\"" + content + "\">";
		return div.innerHTML.indexOf(encoded) > 0
	}

// #3663
// IE encodes newlines inside attribute values while other browsers don't
	var shouldDecodeNewlines = inBrowser ? shouldDecode('\n', '&#10;') : false;

	/*  */

	var decoder;

	function decode (html) {
		decoder = decoder || document.createElement('div');
		decoder.innerHTML = html;
		return decoder.textContent
	}

	/*  */

	var isUnaryTag = makeMap(
		'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' +
		'link,meta,param,source,track,wbr',
		true
	);

// Elements that you can, intentionally, leave open
// (and which close themselves)
	var canBeLeftOpenTag = makeMap(
		'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source',
		true
	);

// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
	var isNonPhrasingTag = makeMap(
		'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' +
		'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' +
		'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' +
		'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' +
		'title,tr,track',
		true
	);

	/**
	 * Not type-checking this file because it's mostly vendor code.
	 */

	/*!
	 * HTML Parser By John Resig (ejohn.org)
	 * Modified by Juriy "kangax" Zaytsev
	 * Original code by Erik Arvidsson, Mozilla Public License
	 * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
	 */

// Regular Expressions for parsing tags and attributes
	var singleAttrIdentifier = /([^\s"'<>/=]+)/;
	var singleAttrAssign = /(?:=)/;
	var singleAttrValues = [
		// attr value double quotes
		/"([^"]*)"+/.source,
		// attr value, single quotes
		/'([^']*)'+/.source,
		// attr value, no quotes
		/([^\s"'=<>`]+)/.source
	];
	var attribute = new RegExp(
		'^\\s*' + singleAttrIdentifier.source +
		'(?:\\s*(' + singleAttrAssign.source + ')' +
		'\\s*(?:' + singleAttrValues.join('|') + '))?'
	);

// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
// but for Vue templates we can enforce a simple charset
	var ncname = '[a-zA-Z_][\\w\\-\\.]*';
	var qnameCapture = '((?:' + ncname + '\\:)?' + ncname + ')';
	var startTagOpen = new RegExp('^<' + qnameCapture);
	var startTagClose = /^\s*(\/?)>/;
	var endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>');
	var doctype = /^<!DOCTYPE [^>]+>/i;
	var comment = /^<!--/;
	var conditionalComment = /^<!\[/;

	var IS_REGEX_CAPTURING_BROKEN = false;
	'x'.replace(/x(.)?/g, function (m, g) {
		IS_REGEX_CAPTURING_BROKEN = g === '';
	});

// Special Elements (can contain anything)
	var isScriptOrStyle = makeMap('script,style', true);
	var hasLang = function (attr) { return attr.name === 'lang' && attr.value !== 'html'; };
	var isSpecialTag = function (tag, isSFC, stack) {
		if (isScriptOrStyle(tag)) {
			return true
		}
		if (isSFC && stack.length === 1) {
			// top-level template that has no pre-processor
			if (tag === 'template' && !stack[0].attrs.some(hasLang)) {
				return false
			} else {
				return true
			}
		}
		return false
	};

	var reCache = {};

	var ltRE = /&lt;/g;
	var gtRE = /&gt;/g;
	var nlRE = /&#10;/g;
	var ampRE = /&amp;/g;
	var quoteRE = /&quot;/g;

	function decodeAttr (value, shouldDecodeNewlines) {
		if (shouldDecodeNewlines) {
			value = value.replace(nlRE, '\n');
		}
		return value
			.replace(ltRE, '<')
			.replace(gtRE, '>')
			.replace(ampRE, '&')
			.replace(quoteRE, '"')
	}

	function parseHTML (html, options) {
		var stack = [];
		var expectHTML = options.expectHTML;
		var isUnaryTag$$1 = options.isUnaryTag || no;
		var index = 0;
		var last, lastTag;
		while (html) {
			last = html;
			// Make sure we're not in a script or style element
			if (!lastTag || !isSpecialTag(lastTag, options.sfc, stack)) {
				var textEnd = html.indexOf('<');
				if (textEnd === 0) {
					// Comment:
					if (comment.test(html)) {
						var commentEnd = html.indexOf('-->');

						if (commentEnd >= 0) {
							advance(commentEnd + 3);
							continue
						}
					}

					// http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
					if (conditionalComment.test(html)) {
						var conditionalEnd = html.indexOf(']>');

						if (conditionalEnd >= 0) {
							advance(conditionalEnd + 2);
							continue
						}
					}

					// Doctype:
					var doctypeMatch = html.match(doctype);
					if (doctypeMatch) {
						advance(doctypeMatch[0].length);
						continue
					}

					// End tag:
					var endTagMatch = html.match(endTag);
					if (endTagMatch) {
						var curIndex = index;
						advance(endTagMatch[0].length);
						parseEndTag(endTagMatch[0], endTagMatch[1], curIndex, index);
						continue
					}

					// Start tag:
					var startTagMatch = parseStartTag();
					if (startTagMatch) {
						handleStartTag(startTagMatch);
						continue
					}
				}

				var text = (void 0), rest$1 = (void 0), next = (void 0);
				if (textEnd > 0) {
					rest$1 = html.slice(textEnd);
					while (
					!endTag.test(rest$1) &&
					!startTagOpen.test(rest$1) &&
					!comment.test(rest$1) &&
					!conditionalComment.test(rest$1)
						) {
						// < in plain text, be forgiving and treat it as text
						next = rest$1.indexOf('<', 1);
						if (next < 0) { break }
						textEnd += next;
						rest$1 = html.slice(textEnd);
					}
					text = html.substring(0, textEnd);
					advance(textEnd);
				}

				if (textEnd < 0) {
					text = html;
					html = '';
				}

				if (options.chars && text) {
					options.chars(text);
				}
			} else {
				var stackedTag = lastTag.toLowerCase();
				var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'));
				var endTagLength = 0;
				var rest = html.replace(reStackedTag, function (all, text, endTag) {
					endTagLength = endTag.length;
					if (stackedTag !== 'script' && stackedTag !== 'style' && stackedTag !== 'noscript') {
						text = text
							.replace(/<!--([\s\S]*?)-->/g, '$1')
							.replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
					}
					if (options.chars) {
						options.chars(text);
					}
					return ''
				});
				index += html.length - rest.length;
				html = rest;
				parseEndTag('</' + stackedTag + '>', stackedTag, index - endTagLength, index);
			}

			if (html === last && options.chars) {
				options.chars(html);
				break
			}
		}

		// Clean up any remaining tags
		parseEndTag();

		function advance (n) {
			index += n;
			html = html.substring(n);
		}

		function parseStartTag () {
			var start = html.match(startTagOpen);
			if (start) {
				var match = {
					tagName: start[1],
					attrs: [],
					start: index
				};
				advance(start[0].length);
				var end, attr;
				while (!(end = html.match(startTagClose)) && (attr = html.match(attribute))) {
					advance(attr[0].length);
					match.attrs.push(attr);
				}
				if (end) {
					match.unarySlash = end[1];
					advance(end[0].length);
					match.end = index;
					return match
				}
			}
		}

		function handleStartTag (match) {
			var tagName = match.tagName;
			var unarySlash = match.unarySlash;

			if (expectHTML) {
				if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
					parseEndTag('', lastTag);
				}
				if (canBeLeftOpenTag(tagName) && lastTag === tagName) {
					parseEndTag('', tagName);
				}
			}

			var unary = isUnaryTag$$1(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash;

			var l = match.attrs.length;
			var attrs = new Array(l);
			for (var i = 0; i < l; i++) {
				var args = match.attrs[i];
				// hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
				if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
					if (args[3] === '') { delete args[3]; }
					if (args[4] === '') { delete args[4]; }
					if (args[5] === '') { delete args[5]; }
				}
				var value = args[3] || args[4] || args[5] || '';
				attrs[i] = {
					name: args[1],
					value: decodeAttr(
						value,
						options.shouldDecodeNewlines
					)
				};
			}

			if (!unary) {
				stack.push({ tag: tagName, attrs: attrs });
				lastTag = tagName;
				unarySlash = '';
			}

			if (options.start) {
				options.start(tagName, attrs, unary, match.start, match.end);
			}
		}

		function parseEndTag (tag, tagName, start, end) {
			var pos;
			if (start == null) { start = index; }
			if (end == null) { end = index; }

			// Find the closest opened tag of the same type
			if (tagName) {
				var needle = tagName.toLowerCase();
				for (pos = stack.length - 1; pos >= 0; pos--) {
					if (stack[pos].tag.toLowerCase() === needle) {
						break
					}
				}
			} else {
				// If no tag name is provided, clean shop
				pos = 0;
			}

			if (pos >= 0) {
				// Close all the open elements, up the stack
				for (var i = stack.length - 1; i >= pos; i--) {
					if (options.end) {
						options.end(stack[i].tag, start, end);
					}
				}

				// Remove the open elements from the stack
				stack.length = pos;
				lastTag = pos && stack[pos - 1].tag;
			} else if (tagName.toLowerCase() === 'br') {
				if (options.start) {
					options.start(tagName, [], true, start, end);
				}
			} else if (tagName.toLowerCase() === 'p') {
				if (options.start) {
					options.start(tagName, [], false, start, end);
				}
				if (options.end) {
					options.end(tagName, start, end);
				}
			}
		}
	}

	/*  */

	function parseFilters (exp) {
		var inSingle = false;
		var inDouble = false;
		var inTemplateString = false;
		var inRegex = false;
		var curly = 0;
		var square = 0;
		var paren = 0;
		var lastFilterIndex = 0;
		var c, prev, i, expression, filters;

		for (i = 0; i < exp.length; i++) {
			prev = c;
			c = exp.charCodeAt(i);
			if (inSingle) {
				if (c === 0x27 && prev !== 0x5C) { inSingle = false; }
			} else if (inDouble) {
				if (c === 0x22 && prev !== 0x5C) { inDouble = false; }
			} else if (inTemplateString) {
				if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; }
			} else if (inRegex) {
				if (c === 0x2f && prev !== 0x5C) { inRegex = false; }
			} else if (
				c === 0x7C && // pipe
				exp.charCodeAt(i + 1) !== 0x7C &&
				exp.charCodeAt(i - 1) !== 0x7C &&
				!curly && !square && !paren
			) {
				if (expression === undefined) {
					// first filter, end of expression
					lastFilterIndex = i + 1;
					expression = exp.slice(0, i).trim();
				} else {
					pushFilter();
				}
			} else {
				switch (c) {
					case 0x22: inDouble = true; break         // "
					case 0x27: inSingle = true; break         // '
					case 0x60: inTemplateString = true; break // `
					case 0x28: paren++; break                 // (
					case 0x29: paren--; break                 // )
					case 0x5B: square++; break                // [
					case 0x5D: square--; break                // ]
					case 0x7B: curly++; break                 // {
					case 0x7D: curly--; break                 // }
				}
				if (c === 0x2f) { // /
					var j = i - 1;
					var p = (void 0);
					// find first non-whitespace prev char
					for (; j >= 0; j--) {
						p = exp.charAt(j);
						if (p !== ' ') { break }
					}
					if (!p || !/[\w$]/.test(p)) {
						inRegex = true;
					}
				}
			}
		}

		if (expression === undefined) {
			expression = exp.slice(0, i).trim();
		} else if (lastFilterIndex !== 0) {
			pushFilter();
		}

		function pushFilter () {
			(filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim());
			lastFilterIndex = i + 1;
		}

		if (filters) {
			for (i = 0; i < filters.length; i++) {
				expression = wrapFilter(expression, filters[i]);
			}
		}

		return expression
	}

	function wrapFilter (exp, filter) {
		var i = filter.indexOf('(');
		if (i < 0) {
			// _f: resolveFilter
			return ("_f(\"" + filter + "\")(" + exp + ")")
		} else {
			var name = filter.slice(0, i);
			var args = filter.slice(i + 1);
			return ("_f(\"" + name + "\")(" + exp + "," + args)
		}
	}

	/*  */

	var defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g;
	var regexEscapeRE = /[-.*+?^${}()|[\]/\\]/g;

	var buildRegex = cached(function (delimiters) {
		var open = delimiters[0].replace(regexEscapeRE, '\\$&');
		var close = delimiters[1].replace(regexEscapeRE, '\\$&');
		return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
	});

	function parseText (
		text,
		delimiters
	) {
		var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE;
		if (!tagRE.test(text)) {
			return
		}
		var tokens = [];
		var lastIndex = tagRE.lastIndex = 0;
		var match, index;
		while ((match = tagRE.exec(text))) {
			index = match.index;
			// push text token
			if (index > lastIndex) {
				tokens.push(JSON.stringify(text.slice(lastIndex, index)));
			}
			// tag token
			var exp = parseFilters(match[1].trim());
			tokens.push(("_s(" + exp + ")"));
			lastIndex = index + match[0].length;
		}
		if (lastIndex < text.length) {
			tokens.push(JSON.stringify(text.slice(lastIndex)));
		}
		return tokens.join('+')
	}

	/*  */

	function baseWarn (msg) {
		console.error(("[Vue parser]: " + msg));
	}

	function pluckModuleFunction (
		modules,
		key
	) {
		return modules
			? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; })
			: []
	}

	function addProp (el, name, value) {
		(el.props || (el.props = [])).push({ name: name, value: value });
	}

	function addAttr (el, name, value) {
		(el.attrs || (el.attrs = [])).push({ name: name, value: value });
	}

	function addDirective (
		el,
		name,
		rawName,
		value,
		arg,
		modifiers
	) {
		(el.directives || (el.directives = [])).push({ name: name, rawName: rawName, value: value, arg: arg, modifiers: modifiers });
	}

	function addHandler (
		el,
		name,
		value,
		modifiers,
		important
	) {
		// check capture modifier
		if (modifiers && modifiers.capture) {
			delete modifiers.capture;
			name = '!' + name; // mark the event as captured
		}
		if (modifiers && modifiers.once) {
			delete modifiers.once;
			name = '~' + name; // mark the event as once
		}
		var events;
		if (modifiers && modifiers.native) {
			delete modifiers.native;
			events = el.nativeEvents || (el.nativeEvents = {});
		} else {
			events = el.events || (el.events = {});
		}
		var newHandler = { value: value, modifiers: modifiers };
		var handlers = events[name];
		/* istanbul ignore if */
		if (Array.isArray(handlers)) {
			important ? handlers.unshift(newHandler) : handlers.push(newHandler);
		} else if (handlers) {
			events[name] = important ? [newHandler, handlers] : [handlers, newHandler];
		} else {
			events[name] = newHandler;
		}
	}

	function getBindingAttr (
		el,
		name,
		getStatic
	) {
		var dynamicValue =
			getAndRemoveAttr(el, ':' + name) ||
			getAndRemoveAttr(el, 'v-bind:' + name);
		if (dynamicValue != null) {
			return parseFilters(dynamicValue)
		} else if (getStatic !== false) {
			var staticValue = getAndRemoveAttr(el, name);
			if (staticValue != null) {
				return JSON.stringify(staticValue)
			}
		}
	}

	function getAndRemoveAttr (el, name) {
		var val;
		if ((val = el.attrsMap[name]) != null) {
			var list = el.attrsList;
			for (var i = 0, l = list.length; i < l; i++) {
				if (list[i].name === name) {
					list.splice(i, 1);
					break
				}
			}
		}
		return val
	}

	var len;
	var str;
	var chr;
	var index$1;
	var expressionPos;
	var expressionEndPos;

	/**
	 * parse directive model to do the array update transform. a[idx] = val => $$a.splice($$idx, 1, val)
	 *
	 * for loop possible cases:
	 *
	 * - test
	 * - test[idx]
	 * - test[test1[idx]]
	 * - test["a"][idx]
	 * - xxx.test[a[a].test1[idx]]
	 * - test.xxx.a["asa"][test1[idx]]
	 *
	 */

	function parseModel (val) {
		str = val;
		len = str.length;
		index$1 = expressionPos = expressionEndPos = 0;

		if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
			return {
				exp: val,
				idx: null
			}
		}

		while (!eof()) {
			chr = next();
			/* istanbul ignore if */
			if (isStringStart(chr)) {
				parseString(chr);
			} else if (chr === 0x5B) {
				parseBracket(chr);
			}
		}

		return {
			exp: val.substring(0, expressionPos),
			idx: val.substring(expressionPos + 1, expressionEndPos)
		}
	}

	function next () {
		return str.charCodeAt(++index$1)
	}

	function eof () {
		return index$1 >= len
	}

	function isStringStart (chr) {
		return chr === 0x22 || chr === 0x27
	}

	function parseBracket (chr) {
		var inBracket = 1;
		expressionPos = index$1;
		while (!eof()) {
			chr = next();
			if (isStringStart(chr)) {
				parseString(chr);
				continue
			}
			if (chr === 0x5B) { inBracket++; }
			if (chr === 0x5D) { inBracket--; }
			if (inBracket === 0) {
				expressionEndPos = index$1;
				break
			}
		}
	}

	function parseString (chr) {
		var stringQuote = chr;
		while (!eof()) {
			chr = next();
			if (chr === stringQuote) {
				break
			}
		}
	}

	/*  */

	var dirRE = /^v-|^@|^:/;
	var forAliasRE = /(.*?)\s+(?:in|of)\s+(.*)/;
	var forIteratorRE = /\((\{[^}]*\}|[^,]*),([^,]*)(?:,([^,]*))?\)/;
	var bindRE = /^:|^v-bind:/;
	var onRE = /^@|^v-on:/;
	var argRE = /:(.*)$/;
	var modifierRE = /\.[^.]+/g;

	var decodeHTMLCached = cached(decode);

// configurable state
	var warn$1;
	var platformGetTagNamespace;
	var platformMustUseProp;
	var platformIsPreTag;
	var preTransforms;
	var transforms;
	var postTransforms;
	var delimiters;

	/**
	 * Convert HTML string to AST.
	 */
	function parse (
		template,
		options
	) {
		warn$1 = options.warn || baseWarn;
		platformGetTagNamespace = options.getTagNamespace || no;
		platformMustUseProp = options.mustUseProp || no;
		platformIsPreTag = options.isPreTag || no;
		preTransforms = pluckModuleFunction(options.modules, 'preTransformNode');
		transforms = pluckModuleFunction(options.modules, 'transformNode');
		postTransforms = pluckModuleFunction(options.modules, 'postTransformNode');
		delimiters = options.delimiters;
		var stack = [];
		var preserveWhitespace = options.preserveWhitespace !== false;
		var root;
		var currentParent;
		var inVPre = false;
		var inPre = false;
		var warned = false;
		parseHTML(template, {
			expectHTML: options.expectHTML,
			isUnaryTag: options.isUnaryTag,
			shouldDecodeNewlines: options.shouldDecodeNewlines,
			start: function start (tag, attrs, unary) {
				// check namespace.
				// inherit parent ns if there is one
				var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag);

				// handle IE svg bug
				/* istanbul ignore if */
				if (isIE && ns === 'svg') {
					attrs = guardIESVGBug(attrs);
				}

				var element = {
					type: 1,
					tag: tag,
					attrsList: attrs,
					attrsMap: makeAttrsMap(attrs),
					parent: currentParent,
					children: []
				};
				if (ns) {
					element.ns = ns;
				}

				if (isForbiddenTag(element) && !isServerRendering()) {
					element.forbidden = true;
					"development" !== 'production' && warn$1(
						'Templates should only be responsible for mapping the state to the ' +
						'UI. Avoid placing tags with side-effects in your templates, such as ' +
						"<" + tag + ">" + ', as they will not be parsed.'
					);
				}

				// apply pre-transforms
				for (var i = 0; i < preTransforms.length; i++) {
					preTransforms[i](element, options);
				}

				if (!inVPre) {
					processPre(element);
					if (element.pre) {
						inVPre = true;
					}
				}
				if (platformIsPreTag(element.tag)) {
					inPre = true;
				}
				if (inVPre) {
					processRawAttrs(element);
				} else {
					processFor(element);
					processIf(element);
					processOnce(element);
					processKey(element);

					// determine whether this is a plain element after
					// removing structural attributes
					element.plain = !element.key && !attrs.length;

					processRef(element);
					processSlot(element);
					processComponent(element);
					for (var i$1 = 0; i$1 < transforms.length; i$1++) {
						transforms[i$1](element, options);
					}
					processAttrs(element);
				}

				function checkRootConstraints (el) {
					if ("development" !== 'production' && !warned) {
						if (el.tag === 'slot' || el.tag === 'template') {
							warned = true;
							warn$1(
								"Cannot use <" + (el.tag) + "> as component root element because it may " +
								'contain multiple nodes:\n' + template
							);
						}
						if (el.attrsMap.hasOwnProperty('v-for')) {
							warned = true;
							warn$1(
								'Cannot use v-for on stateful component root element because ' +
								'it renders multiple elements:\n' + template
							);
						}
					}
				}

				// tree management
				if (!root) {
					root = element;
					checkRootConstraints(root);
				} else if (!stack.length) {
					// allow root elements with v-if, v-else-if and v-else
					if (root.if && (element.elseif || element.else)) {
						checkRootConstraints(element);
						addIfCondition(root, {
							exp: element.elseif,
							block: element
						});
					} else if ("development" !== 'production' && !warned) {
						warned = true;
						warn$1(
							"Component template should contain exactly one root element:" +
							"\n\n" + template + "\n\n" +
							"If you are using v-if on multiple elements, " +
							"use v-else-if to chain them instead."
						);
					}
				}
				if (currentParent && !element.forbidden) {
					if (element.elseif || element.else) {
						processIfConditions(element, currentParent);
					} else if (element.slotScope) { // scoped slot
						currentParent.plain = false;
						var name = element.slotTarget || 'default';(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element;
					} else {
						currentParent.children.push(element);
						element.parent = currentParent;
					}
				}
				if (!unary) {
					currentParent = element;
					stack.push(element);
				}
				// apply post-transforms
				for (var i$2 = 0; i$2 < postTransforms.length; i$2++) {
					postTransforms[i$2](element, options);
				}
			},

			end: function end () {
				// remove trailing whitespace
				var element = stack[stack.length - 1];
				var lastNode = element.children[element.children.length - 1];
				if (lastNode && lastNode.type === 3 && lastNode.text === ' ') {
					element.children.pop();
				}
				// pop stack
				stack.length -= 1;
				currentParent = stack[stack.length - 1];
				// check pre state
				if (element.pre) {
					inVPre = false;
				}
				if (platformIsPreTag(element.tag)) {
					inPre = false;
				}
			},

			chars: function chars (text) {
				if (!currentParent) {
					if ("development" !== 'production' && !warned && text === template) {
						warned = true;
						warn$1(
							'Component template requires a root element, rather than just text:\n\n' + template
						);
					}
					return
				}
				// IE textarea placeholder bug
				/* istanbul ignore if */
				if (isIE &&
					currentParent.tag === 'textarea' &&
					currentParent.attrsMap.placeholder === text) {
					return
				}
				var children = currentParent.children;
				text = inPre || text.trim()
					? decodeHTMLCached(text)
					// only preserve whitespace if its not right after a starting tag
					: preserveWhitespace && children.length ? ' ' : '';
				if (text) {
					var expression;
					if (!inVPre && text !== ' ' && (expression = parseText(text, delimiters))) {
						children.push({
							type: 2,
							expression: expression,
							text: text
						});
					} else if (text !== ' ' || children[children.length - 1].text !== ' ') {
						currentParent.children.push({
							type: 3,
							text: text
						});
					}
				}
			}
		});
		return root
	}

	function processPre (el) {
		if (getAndRemoveAttr(el, 'v-pre') != null) {
			el.pre = true;
		}
	}

	function processRawAttrs (el) {
		var l = el.attrsList.length;
		if (l) {
			var attrs = el.attrs = new Array(l);
			for (var i = 0; i < l; i++) {
				attrs[i] = {
					name: el.attrsList[i].name,
					value: JSON.stringify(el.attrsList[i].value)
				};
			}
		} else if (!el.pre) {
			// non root node in pre blocks with no attributes
			el.plain = true;
		}
	}

	function processKey (el) {
		var exp = getBindingAttr(el, 'key');
		if (exp) {
			if ("development" !== 'production' && el.tag === 'template') {
				warn$1("<template> cannot be keyed. Place the key on real elements instead.");
			}
			el.key = exp;
		}
	}

	function processRef (el) {
		var ref = getBindingAttr(el, 'ref');
		if (ref) {
			el.ref = ref;
			el.refInFor = checkInFor(el);
		}
	}

	function processFor (el) {
		var exp;
		if ((exp = getAndRemoveAttr(el, 'v-for'))) {
			var inMatch = exp.match(forAliasRE);
			if (!inMatch) {
				"development" !== 'production' && warn$1(
					("Invalid v-for expression: " + exp)
				);
				return
			}
			el.for = inMatch[2].trim();
			var alias = inMatch[1].trim();
			var iteratorMatch = alias.match(forIteratorRE);
			if (iteratorMatch) {
				el.alias = iteratorMatch[1].trim();
				el.iterator1 = iteratorMatch[2].trim();
				if (iteratorMatch[3]) {
					el.iterator2 = iteratorMatch[3].trim();
				}
			} else {
				el.alias = alias;
			}
		}
	}

	function processIf (el) {
		var exp = getAndRemoveAttr(el, 'v-if');
		if (exp) {
			el.if = exp;
			addIfCondition(el, {
				exp: exp,
				block: el
			});
		} else {
			if (getAndRemoveAttr(el, 'v-else') != null) {
				el.else = true;
			}
			var elseif = getAndRemoveAttr(el, 'v-else-if');
			if (elseif) {
				el.elseif = elseif;
			}
		}
	}

	function processIfConditions (el, parent) {
		var prev = findPrevElement(parent.children);
		if (prev && prev.if) {
			addIfCondition(prev, {
				exp: el.elseif,
				block: el
			});
		} else {
			warn$1(
				"v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " +
				"used on element <" + (el.tag) + "> without corresponding v-if."
			);
		}
	}

	function findPrevElement (children) {
		var i = children.length;
		while (i--) {
			if (children[i].type === 1) {
				return children[i]
			} else {
				if ("development" !== 'production' && children[i].text !== ' ') {
					warn$1(
						"text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " +
						"will be ignored."
					);
				}
				children.pop();
			}
		}
	}

	function addIfCondition (el, condition) {
		if (!el.ifConditions) {
			el.ifConditions = [];
		}
		el.ifConditions.push(condition);
	}

	function processOnce (el) {
		var once = getAndRemoveAttr(el, 'v-once');
		if (once != null) {
			el.once = true;
		}
	}

	function processSlot (el) {
		if (el.tag === 'slot') {
			el.slotName = getBindingAttr(el, 'name');
			if ("development" !== 'production' && el.key) {
				warn$1(
					"`key` does not work on <slot> because slots are abstract outlets " +
					"and can possibly expand into multiple elements. " +
					"Use the key on a wrapping element instead."
				);
			}
		} else {
			var slotTarget = getBindingAttr(el, 'slot');
			if (slotTarget) {
				el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget;
			}
			if (el.tag === 'template') {
				el.slotScope = getAndRemoveAttr(el, 'scope');
			}
		}
	}

	function processComponent (el) {
		var binding;
		if ((binding = getBindingAttr(el, 'is'))) {
			el.component = binding;
		}
		if (getAndRemoveAttr(el, 'inline-template') != null) {
			el.inlineTemplate = true;
		}
	}

	function processAttrs (el) {
		var list = el.attrsList;
		var i, l, name, rawName, value, arg, modifiers, isProp;
		for (i = 0, l = list.length; i < l; i++) {
			name = rawName = list[i].name;
			value = list[i].value;
			if (dirRE.test(name)) {
				// mark element as dynamic
				el.hasBindings = true;
				// modifiers
				modifiers = parseModifiers(name);
				if (modifiers) {
					name = name.replace(modifierRE, '');
				}
				if (bindRE.test(name)) { // v-bind
					name = name.replace(bindRE, '');
					value = parseFilters(value);
					isProp = false;
					if (modifiers) {
						if (modifiers.prop) {
							isProp = true;
							name = camelize(name);
							if (name === 'innerHtml') { name = 'innerHTML'; }
						}
						if (modifiers.camel) {
							name = camelize(name);
						}
					}
					if (isProp || platformMustUseProp(el.tag, name)) {
						addProp(el, name, value);
					} else {
						addAttr(el, name, value);
					}
				} else if (onRE.test(name)) { // v-on
					name = name.replace(onRE, '');
					addHandler(el, name, value, modifiers);
				} else { // normal directives
					name = name.replace(dirRE, '');
					// parse arg
					var argMatch = name.match(argRE);
					if (argMatch && (arg = argMatch[1])) {
						name = name.slice(0, -(arg.length + 1));
					}
					addDirective(el, name, rawName, value, arg, modifiers);
					if ("development" !== 'production' && name === 'model') {
						checkForAliasModel(el, value);
					}
				}
			} else {
				// literal attribute
				{
					var expression = parseText(value, delimiters);
					if (expression) {
						warn$1(
							name + "=\"" + value + "\": " +
							'Interpolation inside attributes has been removed. ' +
							'Use v-bind or the colon shorthand instead. For example, ' +
							'instead of <div id="{{ val }}">, use <div :id="val">.'
						);
					}
				}
				addAttr(el, name, JSON.stringify(value));
				// #4530 also bind special attributes as props even if they are static
				// so that patches between dynamic/static are consistent
				if (platformMustUseProp(el.tag, name)) {
					if (name === 'value') {
						addProp(el, name, JSON.stringify(value));
					} else {
						addProp(el, name, 'true');
					}
				}
			}
		}
	}

	function checkInFor (el) {
		var parent = el;
		while (parent) {
			if (parent.for !== undefined) {
				return true
			}
			parent = parent.parent;
		}
		return false
	}

	function parseModifiers (name) {
		var match = name.match(modifierRE);
		if (match) {
			var ret = {};
			match.forEach(function (m) { ret[m.slice(1)] = true; });
			return ret
		}
	}

	function makeAttrsMap (attrs) {
		var map = {};
		for (var i = 0, l = attrs.length; i < l; i++) {
			if ("development" !== 'production' && map[attrs[i].name] && !isIE) {
				warn$1('duplicate attribute: ' + attrs[i].name);
			}
			map[attrs[i].name] = attrs[i].value;
		}
		return map
	}

	function isForbiddenTag (el) {
		return (
			el.tag === 'style' ||
			(el.tag === 'script' && (
				!el.attrsMap.type ||
				el.attrsMap.type === 'text/javascript'
			))
		)
	}

	var ieNSBug = /^xmlns:NS\d+/;
	var ieNSPrefix = /^NS\d+:/;

	/* istanbul ignore next */
	function guardIESVGBug (attrs) {
		var res = [];
		for (var i = 0; i < attrs.length; i++) {
			var attr = attrs[i];
			if (!ieNSBug.test(attr.name)) {
				attr.name = attr.name.replace(ieNSPrefix, '');
				res.push(attr);
			}
		}
		return res
	}

	function checkForAliasModel (el, value) {
		var _el = el;
		while (_el) {
			if (_el.for && _el.alias === value) {
				warn$1(
					"<" + (el.tag) + " v-model=\"" + value + "\">: " +
					"You are binding v-model directly to a v-for iteration alias. " +
					"This will not be able to modify the v-for source array because " +
					"writing to the alias is like modifying a function local variable. " +
					"Consider using an array of objects and use v-model on an object property instead."
				);
			}
			_el = _el.parent;
		}
	}

	/*  */

	var isStaticKey;
	var isPlatformReservedTag;

	var genStaticKeysCached = cached(genStaticKeys$1);

	/**
	 * Goal of the optimizer: walk the generated template AST tree
	 * and detect sub-trees that are purely static, i.e. parts of
	 * the DOM that never needs to change.
	 *
	 * Once we detect these sub-trees, we can:
	 *
	 * 1. Hoist them into constants, so that we no longer need to
	 *    create fresh nodes for them on each re-render;
	 * 2. Completely skip them in the patching process.
	 */
	function optimize (root, options) {
		if (!root) { return }
		isStaticKey = genStaticKeysCached(options.staticKeys || '');
		isPlatformReservedTag = options.isReservedTag || no;
		// first pass: mark all non-static nodes.
		markStatic(root);
		// second pass: mark static roots.
		markStaticRoots(root, false);
	}

	function genStaticKeys$1 (keys) {
		return makeMap(
			'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
			(keys ? ',' + keys : '')
		)
	}

	function markStatic (node) {
		node.static = isStatic(node);
		if (node.type === 1) {
			// do not make component slot content static. this avoids
			// 1. components not able to mutate slot nodes
			// 2. static slot content fails for hot-reloading
			if (
				!isPlatformReservedTag(node.tag) &&
				node.tag !== 'slot' &&
				node.attrsMap['inline-template'] == null
			) {
				return
			}
			for (var i = 0, l = node.children.length; i < l; i++) {
				var child = node.children[i];
				markStatic(child);
				if (!child.static) {
					node.static = false;
				}
			}
		}
	}

	function markStaticRoots (node, isInFor) {
		if (node.type === 1) {
			if (node.static || node.once) {
				node.staticInFor = isInFor;
			}
			// For a node to qualify as a static root, it should have children that
			// are not just static text. Otherwise the cost of hoisting out will
			// outweigh the benefits and it's better off to just always render it fresh.
			if (node.static && node.children.length && !(
					node.children.length === 1 &&
					node.children[0].type === 3
				)) {
				node.staticRoot = true;
				return
			} else {
				node.staticRoot = false;
			}
			if (node.children) {
				for (var i = 0, l = node.children.length; i < l; i++) {
					markStaticRoots(node.children[i], isInFor || !!node.for);
				}
			}
			if (node.ifConditions) {
				walkThroughConditionsBlocks(node.ifConditions, isInFor);
			}
		}
	}

	function walkThroughConditionsBlocks (conditionBlocks, isInFor) {
		for (var i = 1, len = conditionBlocks.length; i < len; i++) {
			markStaticRoots(conditionBlocks[i].block, isInFor);
		}
	}

	function isStatic (node) {
		if (node.type === 2) { // expression
			return false
		}
		if (node.type === 3) { // text
			return true
		}
		return !!(node.pre || (
			!node.hasBindings && // no dynamic bindings
			!node.if && !node.for && // not v-if or v-for or v-else
			!isBuiltInTag(node.tag) && // not a built-in
			isPlatformReservedTag(node.tag) && // not a component
			!isDirectChildOfTemplateFor(node) &&
			Object.keys(node).every(isStaticKey)
		))
	}

	function isDirectChildOfTemplateFor (node) {
		while (node.parent) {
			node = node.parent;
			if (node.tag !== 'template') {
				return false
			}
			if (node.for) {
				return true
			}
		}
		return false
	}

	/*  */

	var fnExpRE = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/;
	var simplePathRE = /^\s*[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?']|\[".*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*\s*$/;

// keyCode aliases
	var keyCodes = {
		esc: 27,
		tab: 9,
		enter: 13,
		space: 32,
		up: 38,
		left: 37,
		right: 39,
		down: 40,
		'delete': [8, 46]
	};

	var modifierCode = {
		stop: '$event.stopPropagation();',
		prevent: '$event.preventDefault();',
		self: 'if($event.target !== $event.currentTarget)return;',
		ctrl: 'if(!$event.ctrlKey)return;',
		shift: 'if(!$event.shiftKey)return;',
		alt: 'if(!$event.altKey)return;',
		meta: 'if(!$event.metaKey)return;'
	};

	function genHandlers (events, native) {
		var res = native ? 'nativeOn:{' : 'on:{';
		for (var name in events) {
			res += "\"" + name + "\":" + (genHandler(name, events[name])) + ",";
		}
		return res.slice(0, -1) + '}'
	}

	function genHandler (
		name,
		handler
	) {
		if (!handler) {
			return 'function(){}'
		} else if (Array.isArray(handler)) {
			return ("[" + (handler.map(function (handler) { return genHandler(name, handler); }).join(',')) + "]")
		} else if (!handler.modifiers) {
			return fnExpRE.test(handler.value) || simplePathRE.test(handler.value)
				? handler.value
				: ("function($event){" + (handler.value) + "}")
		} else {
			var code = '';
			var keys = [];
			for (var key in handler.modifiers) {
				if (modifierCode[key]) {
					code += modifierCode[key];
				} else {
					keys.push(key);
				}
			}
			if (keys.length) {
				code = genKeyFilter(keys) + code;
			}
			var handlerCode = simplePathRE.test(handler.value)
				? handler.value + '($event)'
				: handler.value;
			return 'function($event){' + code + handlerCode + '}'
		}
	}

	function genKeyFilter (keys) {
		return ("if(" + (keys.map(genFilterCode).join('&&')) + ")return;")
	}

	function genFilterCode (key) {
		var keyVal = parseInt(key, 10);
		if (keyVal) {
			return ("$event.keyCode!==" + keyVal)
		}
		var alias = keyCodes[key];
		return ("_k($event.keyCode," + (JSON.stringify(key)) + (alias ? ',' + JSON.stringify(alias) : '') + ")")
	}

	/*  */

	function bind$2 (el, dir) {
		el.wrapData = function (code) {
			return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + (dir.modifiers && dir.modifiers.prop ? ',true' : '') + ")")
		};
	}

	/*  */

	var baseDirectives = {
		bind: bind$2,
		cloak: noop
	};

	/*  */

// configurable state
	var warn$2;
	var transforms$1;
	var dataGenFns;
	var platformDirectives$1;
	var isPlatformReservedTag$1;
	var staticRenderFns;
	var onceCount;
	var currentOptions;

	function generate (
		ast,
		options
	) {
		// save previous staticRenderFns so generate calls can be nested
		var prevStaticRenderFns = staticRenderFns;
		var currentStaticRenderFns = staticRenderFns = [];
		var prevOnceCount = onceCount;
		onceCount = 0;
		currentOptions = options;
		warn$2 = options.warn || baseWarn;
		transforms$1 = pluckModuleFunction(options.modules, 'transformCode');
		dataGenFns = pluckModuleFunction(options.modules, 'genData');
		platformDirectives$1 = options.directives || {};
		isPlatformReservedTag$1 = options.isReservedTag || no;
		var code = ast ? genElement(ast) : '_c("div")';
		staticRenderFns = prevStaticRenderFns;
		onceCount = prevOnceCount;
		return {
			render: ("with(this){return " + code + "}"),
			staticRenderFns: currentStaticRenderFns
		}
	}

	function genElement (el) {
		if (el.staticRoot && !el.staticProcessed) {
			return genStatic(el)
		} else if (el.once && !el.onceProcessed) {
			return genOnce(el)
		} else if (el.for && !el.forProcessed) {
			return genFor(el)
		} else if (el.if && !el.ifProcessed) {
			return genIf(el)
		} else if (el.tag === 'template' && !el.slotTarget) {
			return genChildren(el) || 'void 0'
		} else if (el.tag === 'slot') {
			return genSlot(el)
		} else {
			// component or element
			var code;
			if (el.component) {
				code = genComponent(el.component, el);
			} else {
				var data = el.plain ? undefined : genData(el);

				var children = el.inlineTemplate ? null : genChildren(el, true);
				code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")";
			}
			// module transforms
			for (var i = 0; i < transforms$1.length; i++) {
				code = transforms$1[i](el, code);
			}
			return code
		}
	}

// hoist static sub-trees out
	function genStatic (el) {
		el.staticProcessed = true;
		staticRenderFns.push(("with(this){return " + (genElement(el)) + "}"));
		return ("_m(" + (staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")")
	}

// v-once
	function genOnce (el) {
		el.onceProcessed = true;
		if (el.if && !el.ifProcessed) {
			return genIf(el)
		} else if (el.staticInFor) {
			var key = '';
			var parent = el.parent;
			while (parent) {
				if (parent.for) {
					key = parent.key;
					break
				}
				parent = parent.parent;
			}
			if (!key) {
				"development" !== 'production' && warn$2(
					"v-once can only be used inside v-for that is keyed. "
				);
				return genElement(el)
			}
			return ("_o(" + (genElement(el)) + "," + (onceCount++) + (key ? ("," + key) : "") + ")")
		} else {
			return genStatic(el)
		}
	}

	function genIf (el) {
		el.ifProcessed = true; // avoid recursion
		return genIfConditions(el.ifConditions.slice())
	}

	function genIfConditions (conditions) {
		if (!conditions.length) {
			return '_e()'
		}

		var condition = conditions.shift();
		if (condition.exp) {
			return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions)))
		} else {
			return ("" + (genTernaryExp(condition.block)))
		}

		// v-if with v-once should generate code like (a)?_m(0):_m(1)
		function genTernaryExp (el) {
			return el.once ? genOnce(el) : genElement(el)
		}
	}

	function genFor (el) {
		var exp = el.for;
		var alias = el.alias;
		var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : '';
		var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : '';
		el.forProcessed = true; // avoid recursion
		return "_l((" + exp + ")," +
			"function(" + alias + iterator1 + iterator2 + "){" +
			"return " + (genElement(el)) +
			'})'
	}

	function genData (el) {
		var data = '{';

		// directives first.
		// directives may mutate the el's other properties before they are generated.
		var dirs = genDirectives(el);
		if (dirs) { data += dirs + ','; }

		// key
		if (el.key) {
			data += "key:" + (el.key) + ",";
		}
		// ref
		if (el.ref) {
			data += "ref:" + (el.ref) + ",";
		}
		if (el.refInFor) {
			data += "refInFor:true,";
		}
		// pre
		if (el.pre) {
			data += "pre:true,";
		}
		// record original tag name for components using "is" attribute
		if (el.component) {
			data += "tag:\"" + (el.tag) + "\",";
		}
		// module data generation functions
		for (var i = 0; i < dataGenFns.length; i++) {
			data += dataGenFns[i](el);
		}
		// attributes
		if (el.attrs) {
			data += "attrs:{" + (genProps(el.attrs)) + "},";
		}
		// DOM props
		if (el.props) {
			data += "domProps:{" + (genProps(el.props)) + "},";
		}
		// event handlers
		if (el.events) {
			data += (genHandlers(el.events)) + ",";
		}
		if (el.nativeEvents) {
			data += (genHandlers(el.nativeEvents, true)) + ",";
		}
		// slot target
		if (el.slotTarget) {
			data += "slot:" + (el.slotTarget) + ",";
		}
		// scoped slots
		if (el.scopedSlots) {
			data += (genScopedSlots(el.scopedSlots)) + ",";
		}
		// inline-template
		if (el.inlineTemplate) {
			var inlineTemplate = genInlineTemplate(el);
			if (inlineTemplate) {
				data += inlineTemplate + ",";
			}
		}
		data = data.replace(/,$/, '') + '}';
		// v-bind data wrap
		if (el.wrapData) {
			data = el.wrapData(data);
		}
		return data
	}

	function genDirectives (el) {
		var dirs = el.directives;
		if (!dirs) { return }
		var res = 'directives:[';
		var hasRuntime = false;
		var i, l, dir, needRuntime;
		for (i = 0, l = dirs.length; i < l; i++) {
			dir = dirs[i];
			needRuntime = true;
			var gen = platformDirectives$1[dir.name] || baseDirectives[dir.name];
			if (gen) {
				// compile-time directive that manipulates AST.
				// returns true if it also needs a runtime counterpart.
				needRuntime = !!gen(el, dir, warn$2);
			}
			if (needRuntime) {
				hasRuntime = true;
				res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:\"" + (dir.arg) + "\"") : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},";
			}
		}
		if (hasRuntime) {
			return res.slice(0, -1) + ']'
		}
	}

	function genInlineTemplate (el) {
		var ast = el.children[0];
		if ("development" !== 'production' && (
				el.children.length > 1 || ast.type !== 1
			)) {
			warn$2('Inline-template components must have exactly one child element.');
		}
		if (ast.type === 1) {
			var inlineRenderFns = generate(ast, currentOptions);
			return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}")
		}
	}

	function genScopedSlots (slots) {
		return ("scopedSlots:{" + (Object.keys(slots).map(function (key) { return genScopedSlot(key, slots[key]); }).join(',')) + "}")
	}

	function genScopedSlot (key, el) {
		return key + ":function(" + (String(el.attrsMap.scope)) + "){" +
			"return " + (el.tag === 'template'
				? genChildren(el) || 'void 0'
				: genElement(el)) + "}"
	}

	function genChildren (el, checkSkip) {
		var children = el.children;
		if (children.length) {
			var el$1 = children[0];
			// optimize single v-for
			if (children.length === 1 &&
				el$1.for &&
				el$1.tag !== 'template' &&
				el$1.tag !== 'slot') {
				return genElement(el$1)
			}
			var normalizationType = getNormalizationType(children);
			return ("[" + (children.map(genNode).join(',')) + "]" + (checkSkip
				? normalizationType ? ("," + normalizationType) : ''
				: ''))
		}
	}

// determine the normalization needed for the children array.
// 0: no normalization needed
// 1: simple normalization needed (possible 1-level deep nested array)
// 2: full normalization needed
	function getNormalizationType (children) {
		var res = 0;
		for (var i = 0; i < children.length; i++) {
			var el = children[i];
			if (needsNormalization(el) ||
				(el.if && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) {
				res = 2;
				break
			}
			if (maybeComponent(el) ||
				(el.if && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) {
				res = 1;
			}
		}
		return res
	}

	function needsNormalization (el) {
		return el.for || el.tag === 'template' || el.tag === 'slot'
	}

	function maybeComponent (el) {
		return el.type === 1 && !isPlatformReservedTag$1(el.tag)
	}

	function genNode (node) {
		if (node.type === 1) {
			return genElement(node)
		} else {
			return genText(node)
		}
	}

	function genText (text) {
		return ("_v(" + (text.type === 2
			? text.expression // no need for () because already wrapped in _s()
			: transformSpecialNewlines(JSON.stringify(text.text))) + ")")
	}

	function genSlot (el) {
		var slotName = el.slotName || '"default"';
		var children = genChildren(el);
		var res = "_t(" + slotName + (children ? ("," + children) : '');
		var attrs = el.attrs && ("{" + (el.attrs.map(function (a) { return ((camelize(a.name)) + ":" + (a.value)); }).join(',')) + "}");
		var bind$$1 = el.attrsMap['v-bind'];
		if ((attrs || bind$$1) && !children) {
			res += ",null";
		}
		if (attrs) {
			res += "," + attrs;
		}
		if (bind$$1) {
			res += (attrs ? '' : ',null') + "," + bind$$1;
		}
		return res + ')'
	}

// componentName is el.component, take it as argument to shun flow's pessimistic refinement
	function genComponent (componentName, el) {
		var children = el.inlineTemplate ? null : genChildren(el, true);
		return ("_c(" + componentName + "," + (genData(el)) + (children ? ("," + children) : '') + ")")
	}

	function genProps (props) {
		var res = '';
		for (var i = 0; i < props.length; i++) {
			var prop = props[i];
			res += "\"" + (prop.name) + "\":" + (transformSpecialNewlines(prop.value)) + ",";
		}
		return res.slice(0, -1)
	}

// #3895, #4268
	function transformSpecialNewlines (text) {
		return text
			.replace(/\u2028/g, '\\u2028')
			.replace(/\u2029/g, '\\u2029')
	}

	/*  */

	/**
	 * Compile a template.
	 */
	function compile$1 (
		template,
		options
	) {
		var ast = parse(template.trim(), options);
		optimize(ast, options);
		var code = generate(ast, options);
		return {
			ast: ast,
			render: code.render,
			staticRenderFns: code.staticRenderFns
		}
	}

	/*  */

// operators like typeof, instanceof and in are allowed
	var prohibitedKeywordRE = new RegExp('\\b' + (
			'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
			'super,throw,while,yield,delete,export,import,return,switch,default,' +
			'extends,finally,continue,debugger,function,arguments'
		).split(',').join('\\b|\\b') + '\\b');
// check valid identifier for v-for
	var identRE = /[A-Za-z_$][\w$]*/;
// strip strings in expressions
	var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g;

// detect problematic expressions in a template
	function detectErrors (ast) {
		var errors = [];
		if (ast) {
			checkNode(ast, errors);
		}
		return errors
	}

	function checkNode (node, errors) {
		if (node.type === 1) {
			for (var name in node.attrsMap) {
				if (dirRE.test(name)) {
					var value = node.attrsMap[name];
					if (value) {
						if (name === 'v-for') {
							checkFor(node, ("v-for=\"" + value + "\""), errors);
						} else {
							checkExpression(value, (name + "=\"" + value + "\""), errors);
						}
					}
				}
			}
			if (node.children) {
				for (var i = 0; i < node.children.length; i++) {
					checkNode(node.children[i], errors);
				}
			}
		} else if (node.type === 2) {
			checkExpression(node.expression, node.text, errors);
		}
	}

	function checkFor (node, text, errors) {
		checkExpression(node.for || '', text, errors);
		checkIdentifier(node.alias, 'v-for alias', text, errors);
		checkIdentifier(node.iterator1, 'v-for iterator', text, errors);
		checkIdentifier(node.iterator2, 'v-for iterator', text, errors);
	}

	function checkIdentifier (ident, type, text, errors) {
		if (typeof ident === 'string' && !identRE.test(ident)) {
			errors.push(("- invalid " + type + " \"" + ident + "\" in expression: " + text));
		}
	}

	function checkExpression (exp, text, errors) {
		try {
			new Function(("return " + exp));
		} catch (e) {
			var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE);
			if (keywordMatch) {
				errors.push(
					"- avoid using JavaScript keyword as property name: " +
					"\"" + (keywordMatch[0]) + "\" in expression " + text
				);
			} else {
				errors.push(("- invalid expression: " + text));
			}
		}
	}

	/*  */

	function transformNode (el, options) {
		var warn = options.warn || baseWarn;
		var staticClass = getAndRemoveAttr(el, 'class');
		if ("development" !== 'production' && staticClass) {
			var expression = parseText(staticClass, options.delimiters);
			if (expression) {
				warn(
					"class=\"" + staticClass + "\": " +
					'Interpolation inside attributes has been removed. ' +
					'Use v-bind or the colon shorthand instead. For example, ' +
					'instead of <div class="{{ val }}">, use <div :class="val">.'
				);
			}
		}
		if (staticClass) {
			el.staticClass = JSON.stringify(staticClass);
		}
		var classBinding = getBindingAttr(el, 'class', false /* getStatic */);
		if (classBinding) {
			el.classBinding = classBinding;
		}
	}

	function genData$1 (el) {
		var data = '';
		if (el.staticClass) {
			data += "staticClass:" + (el.staticClass) + ",";
		}
		if (el.classBinding) {
			data += "class:" + (el.classBinding) + ",";
		}
		return data
	}

	var klass$1 = {
		staticKeys: ['staticClass'],
		transformNode: transformNode,
		genData: genData$1
	};

	/*  */

	function transformNode$1 (el, options) {
		var warn = options.warn || baseWarn;
		var staticStyle = getAndRemoveAttr(el, 'style');
		if (staticStyle) {
			/* istanbul ignore if */
			{
				var expression = parseText(staticStyle, options.delimiters);
				if (expression) {
					warn(
						"style=\"" + staticStyle + "\": " +
						'Interpolation inside attributes has been removed. ' +
						'Use v-bind or the colon shorthand instead. For example, ' +
						'instead of <div style="{{ val }}">, use <div :style="val">.'
					);
				}
			}
			el.staticStyle = JSON.stringify(parseStyleText(staticStyle));
		}

		var styleBinding = getBindingAttr(el, 'style', false /* getStatic */);
		if (styleBinding) {
			el.styleBinding = styleBinding;
		}
	}

	function genData$2 (el) {
		var data = '';
		if (el.staticStyle) {
			data += "staticStyle:" + (el.staticStyle) + ",";
		}
		if (el.styleBinding) {
			data += "style:(" + (el.styleBinding) + "),";
		}
		return data
	}

	var style$1 = {
		staticKeys: ['staticStyle'],
		transformNode: transformNode$1,
		genData: genData$2
	};

	var modules$1 = [
		klass$1,
		style$1
	];

	/*  */

	var warn$3;

	function model$1 (
		el,
		dir,
		_warn
	) {
		warn$3 = _warn;
		var value = dir.value;
		var modifiers = dir.modifiers;
		var tag = el.tag;
		var type = el.attrsMap.type;
		{
			var dynamicType = el.attrsMap['v-bind:type'] || el.attrsMap[':type'];
			if (tag === 'input' && dynamicType) {
				warn$3(
					"<input :type=\"" + dynamicType + "\" v-model=\"" + value + "\">:\n" +
					"v-model does not support dynamic input types. Use v-if branches instead."
				);
			}
		}
		if (tag === 'select') {
			genSelect(el, value, modifiers);
		} else if (tag === 'input' && type === 'checkbox') {
			genCheckboxModel(el, value, modifiers);
		} else if (tag === 'input' && type === 'radio') {
			genRadioModel(el, value, modifiers);
		} else {
			genDefaultModel(el, value, modifiers);
		}
		// ensure runtime directive metadata
		return true
	}

	function genCheckboxModel (
		el,
		value,
		modifiers
	) {
		if ("development" !== 'production' &&
			el.attrsMap.checked != null) {
			warn$3(
				"<" + (el.tag) + " v-model=\"" + value + "\" checked>:\n" +
				"inline checked attributes will be ignored when using v-model. " +
				'Declare initial values in the component\'s data option instead.'
			);
		}
		var number = modifiers && modifiers.number;
		var valueBinding = getBindingAttr(el, 'value') || 'null';
		var trueValueBinding = getBindingAttr(el, 'true-value') || 'true';
		var falseValueBinding = getBindingAttr(el, 'false-value') || 'false';
		addProp(el, 'checked',
			"Array.isArray(" + value + ")" +
			"?_i(" + value + "," + valueBinding + ")>-1" + (
				trueValueBinding === 'true'
					? (":(" + value + ")")
					: (":_q(" + value + "," + trueValueBinding + ")")
			)
		);
		addHandler(el, 'change',
			"var $$a=" + value + "," +
			'$$el=$event.target,' +
			"$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" +
			'if(Array.isArray($$a)){' +
			"var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," +
			'$$i=_i($$a,$$v);' +
			"if($$c){$$i<0&&(" + value + "=$$a.concat($$v))}" +
			"else{$$i>-1&&(" + value + "=$$a.slice(0,$$i).concat($$a.slice($$i+1)))}" +
			"}else{" + value + "=$$c}",
			null, true
		);
	}

	function genRadioModel (
		el,
		value,
		modifiers
	) {
		if ("development" !== 'production' &&
			el.attrsMap.checked != null) {
			warn$3(
				"<" + (el.tag) + " v-model=\"" + value + "\" checked>:\n" +
				"inline checked attributes will be ignored when using v-model. " +
				'Declare initial values in the component\'s data option instead.'
			);
		}
		var number = modifiers && modifiers.number;
		var valueBinding = getBindingAttr(el, 'value') || 'null';
		valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding;
		addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")"));
		addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true);
	}

	function genDefaultModel (
		el,
		value,
		modifiers
	) {
		{
			if (el.tag === 'input' && el.attrsMap.value) {
				warn$3(
					"<" + (el.tag) + " v-model=\"" + value + "\" value=\"" + (el.attrsMap.value) + "\">:\n" +
					'inline value attributes will be ignored when using v-model. ' +
					'Declare initial values in the component\'s data option instead.'
				);
			}
			if (el.tag === 'textarea' && el.children.length) {
				warn$3(
					"<textarea v-model=\"" + value + "\">:\n" +
					'inline content inside <textarea> will be ignored when using v-model. ' +
					'Declare initial values in the component\'s data option instead.'
				);
			}
		}

		var type = el.attrsMap.type;
		var ref = modifiers || {};
		var lazy = ref.lazy;
		var number = ref.number;
		var trim = ref.trim;
		var event = lazy || (isIE && type === 'range') ? 'change' : 'input';
		var needCompositionGuard = !lazy && type !== 'range';
		var isNative = el.tag === 'input' || el.tag === 'textarea';

		var valueExpression = isNative
			? ("$event.target.value" + (trim ? '.trim()' : ''))
			: trim ? "(typeof $event === 'string' ? $event.trim() : $event)" : "$event";
		valueExpression = number || type === 'number'
			? ("_n(" + valueExpression + ")")
			: valueExpression;

		var code = genAssignmentCode(value, valueExpression);
		if (isNative && needCompositionGuard) {
			code = "if($event.target.composing)return;" + code;
		}

		// inputs with type="file" are read only and setting the input's
		// value will throw an error.
		if ("development" !== 'production' &&
			type === 'file') {
			warn$3(
				"<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" +
				"File inputs are read only. Use a v-on:change listener instead."
			);
		}

		addProp(el, 'value', isNative ? ("_s(" + value + ")") : ("(" + value + ")"));
		addHandler(el, event, code, null, true);
		if (trim || number || type === 'number') {
			addHandler(el, 'blur', '$forceUpdate()');
		}
	}

	function genSelect (
		el,
		value,
		modifiers
	) {
		{
			el.children.some(checkOptionWarning);
		}

		var number = modifiers && modifiers.number;
		var assignment = "Array.prototype.filter" +
			".call($event.target.options,function(o){return o.selected})" +
			".map(function(o){var val = \"_value\" in o ? o._value : o.value;" +
			"return " + (number ? '_n(val)' : 'val') + "})" +
			(el.attrsMap.multiple == null ? '[0]' : '');

		var code = genAssignmentCode(value, assignment);
		addHandler(el, 'change', code, null, true);
	}

	function checkOptionWarning (option) {
		if (option.type === 1 &&
			option.tag === 'option' &&
			option.attrsMap.selected != null) {
			warn$3(
				"<select v-model=\"" + (option.parent.attrsMap['v-model']) + "\">:\n" +
				'inline selected attributes on <option> will be ignored when using v-model. ' +
				'Declare initial values in the component\'s data option instead.'
			);
			return true
		}
		return false
	}

	function genAssignmentCode (value, assignment) {
		var modelRs = parseModel(value);
		if (modelRs.idx === null) {
			return (value + "=" + assignment)
		} else {
			return "var $$exp = " + (modelRs.exp) + ", $$idx = " + (modelRs.idx) + ";" +
				"if (!Array.isArray($$exp)){" +
				value + "=" + assignment + "}" +
				"else{$$exp.splice($$idx, 1, " + assignment + ")}"
		}
	}

	/*  */

	function text (el, dir) {
		if (dir.value) {
			addProp(el, 'textContent', ("_s(" + (dir.value) + ")"));
		}
	}

	/*  */

	function html (el, dir) {
		if (dir.value) {
			addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"));
		}
	}

	var directives$1 = {
		model: model$1,
		text: text,
		html: html
	};

	/*  */

	var cache = Object.create(null);

	var baseOptions = {
		expectHTML: true,
		modules: modules$1,
		staticKeys: genStaticKeys(modules$1),
		directives: directives$1,
		isReservedTag: isReservedTag,
		isUnaryTag: isUnaryTag,
		mustUseProp: mustUseProp,
		getTagNamespace: getTagNamespace,
		isPreTag: isPreTag
	};

	function compile$$1 (
		template,
		options
	) {
		options = options
			? extend(extend({}, baseOptions), options)
			: baseOptions;
		return compile$1(template, options)
	}

	function compileToFunctions (
		template,
		options,
		vm
	) {
		var _warn = (options && options.warn) || warn;
		// detect possible CSP restriction
		/* istanbul ignore if */
		{
			try {
				new Function('return 1');
			} catch (e) {
				if (e.toString().match(/unsafe-eval|CSP/)) {
					_warn(
						'It seems you are using the standalone build of Vue.js in an ' +
						'environment with Content Security Policy that prohibits unsafe-eval. ' +
						'The template compiler cannot work in this environment. Consider ' +
						'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
						'templates into render functions.'
					);
				}
			}
		}
		var key = options && options.delimiters
			? String(options.delimiters) + template
			: template;
		if (cache[key]) {
			return cache[key]
		}
		var res = {};
		var compiled = compile$$1(template, options);
		res.render = makeFunction(compiled.render);
		var l = compiled.staticRenderFns.length;
		res.staticRenderFns = new Array(l);
		for (var i = 0; i < l; i++) {
			res.staticRenderFns[i] = makeFunction(compiled.staticRenderFns[i]);
		}
		{
			if (res.render === noop || res.staticRenderFns.some(function (fn) { return fn === noop; })) {
				_warn(
					"failed to compile template:\n\n" + template + "\n\n" +
					detectErrors(compiled.ast).join('\n') +
					'\n\n',
					vm
				);
			}
		}
		return (cache[key] = res)
	}

	function makeFunction (code) {
		try {
			return new Function(code)
		} catch (e) {
			return noop
		}
	}

	/*  */

	var idToTemplate = cached(function (id) {
		var el = query(id);
		return el && el.innerHTML
	});

	var mount = Vue$3.prototype.$mount;
	Vue$3.prototype.$mount = function (
		el,
		hydrating
	) {
		el = el && query(el);

		/* istanbul ignore if */
		if (el === document.body || el === document.documentElement) {
			"development" !== 'production' && warn(
				"Do not mount Vue to <html> or <body> - mount to normal elements instead."
			);
			return this
		}

		var options = this.$options;
		// resolve template/el and convert to render function
		if (!options.render) {
			var template = options.template;
			if (template) {
				if (typeof template === 'string') {
					if (template.charAt(0) === '#') {
						template = idToTemplate(template);
						/* istanbul ignore if */
						if ("development" !== 'production' && !template) {
							warn(
								("Template element not found or is empty: " + (options.template)),
								this
							);
						}
					}
				} else if (template.nodeType) {
					template = template.innerHTML;
				} else {
					{
						warn('invalid template option:' + template, this);
					}
					return this
				}
			} else if (el) {
				template = getOuterHTML(el);
			}
			if (template) {
				var ref = compileToFunctions(template, {
					warn: warn,
					shouldDecodeNewlines: shouldDecodeNewlines,
					delimiters: options.delimiters
				}, this);
				var render = ref.render;
				var staticRenderFns = ref.staticRenderFns;
				options.render = render;
				options.staticRenderFns = staticRenderFns;
			}
		}
		return mount.call(this, el, hydrating)
	};

	/**
	 * Get outerHTML of elements, taking care
	 * of SVG elements in IE as well.
	 */
	function getOuterHTML (el) {
		if (el.outerHTML) {
			return el.outerHTML
		} else {
			var container = document.createElement('div');
			container.appendChild(el.cloneNode(true));
			return container.innerHTML
		}
	}

	Vue$3.compile = compileToFunctions;

	return Vue$3;

})));